Semantic Coherence: Vietnam Airlines – Signal Evidence & AI Readability

Vietnam Airlines

(https://vietnamairlines.com) 📸 Data Snapshot: June 20, 2026
Semantic Coherence — The Lens

Pull the main entities out of the H1, then check whether they actually recur through the body. A page that announces one thing and then talks about another drifts. Headings with no real sentences underneath read as pseudo-substance.

Semantic Coherence Homepage promise vs. Sub-page reality.
18 Impact Weight: 20 / 100
90% Reputation

There is a minor disconnect between the aspirational homepage signal of an ‘ultimate experience’ and the pragmatic, transactional nature of the sub-pages which focus on ‘Excess baggage’ and ‘Prepaid’ fees. While the messaging is consistent regarding the brand identity, the hero promise of inspiration doesn’t quite match the utilitarian rail-and-fly or baggage fee content. The cross-page consistency is strong for the Lotusmiles program, but the ‘5m+ people inspired’ metric remains detached from the actual service offerings.

Semantic Coherence is read from the heading hierarchy first: what each page announces in its H1 and headings, then whether the body actually delivers on it. Below is the structure the engine mapped, followed by the clean text to check for drift between promise and reality.

🏗️ Semantic Structure — heading hierarchy & page identity (the promise the page makes)
HOMEPAGE Vietnam Airlines | Reach Further | Official website (https://vietnamairlines.com)
Title

Vietnam Airlines | Reach Further | Official website

H1 The ultimate experience
H3 Vietnam Airlines
H3 Support
H3 Legal
H3 Useful Information
H3 Cargo
H4 Vietnamese identity
H4 promotion
H4 Vietnam Airlines Awards
H5 News
H5 Economy Class
H5 Economy Class
H5 Vietnam Airlines
H6 Notice
H6 Type of Service
H6 Class of Service
H6 Support
H6 Legal
H6 Useful Information
H6 Cargo
H6 Vietnam Airlines Awards
NAV_HEADER_REPEATED Vietnam Airlines | Extra Services (https://vietnamairlines.com/gb/en/additional-services/)
Title

Vietnam Airlines | Extra Services

H1 Additional services
H3 Vietnam Airlines
H3 Support
H3 Legal
H3 Useful Information
H3 Cargo
H4 Vietnam Airlines Awards
H5 A combined rail and flight product
H5 Excess baggage
H5 Pre-purchase LotusDeli products
H5 Secure my fare
H5 Sky Sofa
H5 E-voucher
H5 Advance seat selection
H5 Upgrade
H5 TripCARE Insurance
H5 Booking hotel
H5 Travel Ready insurance
H5 Viettel international service plan
H5 Transit tour
H5 Lotusmiles Business Lounge
H5 Vietnam Airlines
H6 Notice
H6 Support
H6 Legal
H6 Useful Information
H6 Cargo
H6 Vietnam Airlines Awards
NAV_HEADER_HEADING_REPEATED_FOOTER Partnership with Lotusmiles | Vietnam Airlines (https://vietnamairlines.com/gb/en/lotusmiles/partnership/introduction/)
Title

Partnership with Lotusmiles | Vietnam Airlines

H1 Partnership with Lotusmiles
H2 Lotusmiles: A History of Prestige and a Far-Reaching Vision
H2 Collaborating with Lotusmiles – Invaluable Benefits
H2 Lotusmiles – Opening Doors to Diverse Collaborations
H2 Lotusmiles Partner Preferences
H2 Lotusmiles Products & Services
H2 References
H2 Lotusmiles Partnership Contact Information
H3 Vietnam Airlines
H3 Support
H3 Legal
H3 Useful Information
H3 Cargo
H4 Vietnam Airlines Awards
H5 Are you satisfied with the information found?
H5 Thank you for your feedback!
H5 Vietnam Airlines
H6 Notice
H6 What make you dissatisfied with?
H6 What make you dissatisfied with?
H6 What can we do to improve this?
H6 What can we do to improve this?
H6 What information are you looking for?
H6 What information are you looking for?
H6 Support
H6 Legal
H6 Useful Information
H6 Cargo
H6 Vietnam Airlines Awards
NAV_HEADER_REPEATED Excess Baggage | Vietnam Airlines (https://vietnamairlines.com/gb/en/additional-services/excess-baggage/)
Title

Excess Baggage | Vietnam Airlines

H1 Excess baggage
H2 Prepaid Baggage
H2 Excess baggage at the airport
H2 Related Information
H3 How to buy prepaid baggage
H3 Regulations on the weight and size of prepaid baggage
H3 Rate of prepaid baggage
H3 How to buy excess baggage at the airport
H3 Standard of excess baggage at the airport
H3 Rate of excess baggage at the airport
H3 Vietnam Airlines
H3 Support
H3 Legal
H3 Useful Information
H3 Cargo
H4 Standard excess baggage
H4 Oversized piece
H4 Overweight piece
H4 Vietnam Airlines Awards
H5 Are you satisfied with the information found?
H5 Thank you for your feedback!
H5 Vietnam Airlines
H6 Notice
H6 What make you dissatisfied with?
H6 What make you dissatisfied with?
H6 What can we do to improve this?
H6 What can we do to improve this?
H6 What information are you looking for?
H6 What information are you looking for?
H6 Support
H6 Legal
H6 Useful Information
H6 Cargo
H6 Vietnam Airlines Awards
📝 The Narrative — clean text per page (homepage promise vs. sub-page reality)
HOMEPAGE (https://vietnamairlines.com) Vietnam Airlines | Reach Further | Official website
The earlier you plan, the more you save
Unlock greater savings

Discover now

A new booking experience for passengers in Ireland and Greece
COMING SOON

Discover now

03
03

The earlier you plan, the more you save
Unlock greater savings

Discover now

A new booking experience for passengers in Ireland and Greece
COMING SOON

Discover now

03
03

[H5] News

Notice on the Increase of the International Tourist Tax for Flights Departing from Japan
2026-06-11

1
/
1

[H1] The ultimate experience

See all services
[IMG: Next Button]

[IMG: Logo]

See all services
[IMG: Next Button]

[H1] Bringing Vietnamese Identity
[H1] to the World.

[H4] Vietnamese identity
[H4] promotion

Every journey, every story you tell can inspire thousands of Vietnamese lovers. Join the program by signing in to your Lotusmiles account.

Member sign-up

Your browser does not support the video tag.

[IMG: Mute]

[IMG: Play]

[H1] 5m+
Over 5.000.000 people have been inspired
[H1] 2100+
Tagged images and videos
#cherisheverymile

[H1] Subscribe to our E-Newsletter

Subscribe to our E-Newsletter to receive the latest news and promotions from Vietnam Airlines (this does not include information or offers from the Lotusmiles Program).
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SUB-PAGE (https://vietnamairlines.com/gb/en/additional-services/) Vietnam Airlines | Extra Services
Home

Additional Services

[H1] Additional services

[IMG: rail-and-fly]

[H5]
A combined rail and flight product

Easily book flight tickets combined with high-speed train tickets for seamless connections to major cities.

[IMG: Excess Baggage | Vietnam Airlines]

[H5]
Excess baggage

Learn about regulations on prepaid baggage and how to purchase additional checked baggage on Vietnam Airlines flights.

[IMG: Pre-purchase LotusDeli products]

[H5]
Pre-purchase LotusDeli products

With pre-purchased LotusDeli products, passengers can freely choose meals that suit your taste.

[IMG: Secure-my-fare]

[H5]
Secure my fare

A passenger found an ideal ticket price but is not ready to buy at that moment. With the "secure my fare" function, passengers can keep their desired fare and have more time to complete their trip plan with only a small fee.

[IMG: Sky Sofa]

[H5]
Sky Sofa

Select the Sky sofa with two adjacent empty seats in the Economy cabin to enjoy a comfortable flight with Vietnam Airlines.

[IMG: Vietnam-Airlines-E-voucher]

[H5]
E-voucher

The E-voucher payment method (Gift Voucher) allows passengers to conveniently purchase Vietnam Airlines products and services, as well as send E-vouchers as gifts to family and friends.

[IMG: Advance seat selection]

[H5]
Advance seat selection

Select your seat in advance to get the best place you want and enjoy a comfortable flight with Vietnam Airlines!

[IMG: Upgrade | Vietnam Airlines]

[H5]
Upgrade

After purchasing tickets, passengers can easily upgrade ticket class to experience a variety of best-in-class services and amenities.

[IMG: TripCARE Travel Insurance | Vietnam Airlines]

[H5]
TripCARE Insurance

TripCARE is a comprehensive travel insurance product for Vietnam Airlines’ passengers on domestic and international flights.

[IMG: Booking Hotel | Vietnam Airlines]

[H5]
Booking hotel

The hotel booking service partnering between Vietnam Airlines and Booking.com provides convenient accommodation for passengers.

[IMG: Travel Ready insurance | Vietnam Airlines]

[H5]
Travel Ready insurance

Travel Ready is a comprehensive travel insurance for Vietnam Airlines’ passengers applicable to one-way/round trip itineraries departing from Singapore.

[IMG: Telecommunication Service Plan | Vietnam Airlines]

[H5]
Viettel international service plan

Through Viettel’s international roaming service, travelers abroad can maintain communication with their current phone number, including making calls, sending messages, and using mobile data seamlessly.

[IMG: Transit tour]

[H5]
Transit tour

Passengers connecting via Hanoi or Tan Son Nhat Airport (Vietnam) will have an opportunity to enjoy sightseeing and tourist services during transit.

[IMG: Lotusmiles Business Lounge]

[H5]
Lotusmiles Business Lounge

With Lotusmiles Business Lounge, passengers can book access to over 1,400 premium airport lounges worldwide and earn award miles for every dollar spent.
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SUB-PAGE (https://vietnamairlines.com/gb/en/lotusmiles/partnership/introduction/) Partnership with Lotusmiles | Vietnam Airlines
Partnership Opportunities

Partnership with Lotusmiles

[IMG: common detail page]

[H1] Partnership with Lotusmiles

Lotusmiles: A History of Prestige and a Far-Reaching Vision
Collaborating with Lotusmiles - Invaluable Benefits
Lotusmiles - Opening Doors to Diverse Collaborations
Lotusmiles Partner Preferences
Lotusmiles Products & Services
References
Lotusmiles Partnership Contact Information

Vietnam Airlines - Lotusmiles is pleased to cooperate with our partners.

Lotusmiles - Vietnam Airlines' frequent flyer program with a 25-year history of development and 6+ million members, offering you the opportunity to connect with millions of potential customers, opening the door to breakthrough business potential and even more access to the SkyTeam airline alliance.
[H2] Lotusmiles: A History of Prestige and a Far-Reaching Vision
Established in 1999, Lotusmiles is proud to be Vietnam's longest-standing and pioneering frequent flyer program with over 6 million members.Mission: Providing premium flight experiences and exclusive privileges for our frequent flyers.Vision: Becoming the leading loyalty program in Vietnam and the region, accompanying customers on every journey to explore the world.
[H2] Collaborating with Lotusmiles - Invaluable Benefits
Strengthening Customer Loyalty: Attract and retain customers with enticing benefits and privileges from the Vietnam’s flag carrier, such as earning flight miles, redeeming flight tickets, seat upgrades, priority check-in, lounge access, and services from Vietnam Airlines, SkyTeam member airlines and other partners.Accessing Potential Customers: Lotusmiles' member network spans across Vietnam and internationally, including individuals with high income and significant spending capacity.Business Development: Increase revenue, expand market reach, enhance brand recognition, and reputation.Attracting New Customers: Attract new customers through our exclusive initiatives and offers for Lotusmiles members.
[H2] Lotusmiles - Opening Doors to Diverse Collaborations
Finance/Banking: Partnering with Lotusmiles to offer payment solutions and attractive finance-related benefits for customers.Hotels/Resorts: Enhancing travel experiences with room discounts, services, upgrades...Retail/Shopping: Enjoying price discounts, gifts when purchasing products, services.Insurance: Providing peace of mind with travel insurance, health coverage...Car Rental/Ride-hailing: Convenient transportation with price discounts, rental services.Health/Beauty/Lifestyle: Caring for health, enhancing beauty, and enjoying life with spa services, beauty treatments, gym...
[H2] Lotusmiles Partner Preferences
Advanced Technology Platform: Ready to connect with high-tech systems, ensuring strong security to provide the best experience for customers.Committed to Comprehensive Collaboration: Understand and appreciate the Vietnam Airlines - Lotusmiles brand, ready to work together to deliver the best products and services to customers.Matched Customer Databases/Segments: Align with the criteria and cooperation regulations of Vietnam Airlines - Lotusmiles.
[H2] Lotusmiles Products & Services
Bonus MilesQualifying MilesQualifying SegmentsLotusmiles MembershipsVoucher Distribution on Lotusmiles Mobile AppMedia & Advertising Solutions on Vietnam Airlines - Lotusmiles extensive global media coverage
[H2] References
Program IntroductionMembership BenefitsMembership EligibilityNews & Offers
[H2] Lotusmiles Partnership Contact Information
Business Development Division, Lotusmiles Program - Vietnam Airlines JSC.Email: partnership.ls@vietnamairlines.com
Please contact us now to explore potential together and build sustainable values!

[H5] Are you satisfied with the information found?

[IMG: 1-star]

[IMG: 1-star]

Very dissatisfied

[IMG: 2-stars]

[IMG: 2-stars]

Dissatisfied

[IMG: 3-stars]

[IMG: 3-stars]

Normal

[IMG: 4-stars]

[IMG: 4-stars]

Satisfied

[IMG: 5-stars]

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Very satisfied

[H6]
What make you dissatisfied with?
[H6]
What make you dissatisfied with?

Unclear and confusing information

Insuffcient information

Outdated information

Not user-friendly display

Not user-friendly display

Other

Flight selection

Passenger information

Additional services

Seat selection

Payment

Other

Pre-paid baggage

Upgrades

Seat selection

Flight exchange

Refund ticket

Other

[H6]
What can we do to improve this?
[H6]
What can we do to improve this?
[H6]
What information are you looking for?
[H6]
What information are you looking for?

If you require a response, please access our Feedback page.

Service feedback.

0/200

Send feedback

[IMG: thanks]

[H5]
Thank you for your feedback!
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SUB-PAGE (https://vietnamairlines.com/gb/en/additional-services/excess-baggage/) Excess Baggage | Vietnam Airlines
Additional Services

Excess baggage

[IMG: common detail page]

[H1] Excess baggage

If a passenger's checked baggage exceeds the allowed standards, the passenger may purchase additional checked baggage: prepaid or excess baggage at the airport.

Table of Contents

Prepaid Baggage
How to buy prepaid baggage
Regulations on the weight and size of prepaid baggage
Rate of prepaid baggage
Excess baggage at the airport
How to buy excess baggage at the airport
Standard of excess baggage at the airport
Rate of excess baggage at the airport
Related Information

[H2] Prepaid Baggage
Prepaid baggage allows passengers to purchase additional checked baggage at least 3 hours before departure time via Vietnam Airlines website/app or sales office/agent. With prepaid baggage, passengers can save up to 50% compared to purchasing additional checked baggage at the airport (Excess baggage).
Especially, Lotusmiles members will earn bonus miles when purchasing prepaid baggage from May 27, 2025. Please refer to the section Earn miles when purchasing ancillary.
[H3] How to buy prepaid baggage
Passengers can purchase up to 15 pieces of prepaid baggage via following channels:
Purchase prepaid baggage at Vietnam Airlines sales offices and agents;In the process of booking online via Vietnam Airlines website and mobile app;

BUY TICKETS & PREPAID BAGGAGE

After ticket issuance, passengers can purchase prepaid baggage at the section of “Manage Booking” - “Buy ancillaries” - “Prepaid baggage”.

BUY PREPAID BAGGAGE

[H3] Regulations on the weight and size of prepaid baggage
Prepaid baggage must follow the standard piece regulations in terms of size and weight as follows:
The maximum weight of a standard piece is 23kg.The maximum total three dimensions of a standard piece is158cm.

[IMG: Size of VNA prepaid baggage.]

When checking in at the airport, if the actual weight or size of checked baggage exceeds the Regulations on free checked baggage and prepaid baggage purchased shall cover the excess baggage.
Notes:
Prepaid baggage applies to tickets of Vietnam Airlines (738) operated by Vietnam Airlines or Pacific Airlines (except for flights operated using ATR 72 aircraft).Prepaid baggage must be purchased at least 03 hours before departure.Prepaid baggage is allowed to change to a new travel date/ itinerary with equal or higher cost. The change must be made at least 03 hours before the departure time of the new flight segment.Prepaid baggage cannot be endorsed, refunded, or exchanged for other services or tickets.Completely unused prepaid baggage associated with a ticket whose itinerary originates in Korea is refundable. The refund fee is 25% of the unused prepaid baggage's value.
[H3] Rate of prepaid baggage
To learn about the rules and pricing for prepaid baggage, passengers can use the Baggage Lookup feature or refer to the detailed price list. .
[H2] Excess baggage at the airport
When checking in at the airport, excess baggage applies to the following cases:
The number of pieces, the weight and/or size of actual checked baggage exceeds the Regulations on free checked baggage and the passenger has not purchased prepaid baggage, orThe number of pieces, weight or size of checked baggage exceeds the Regulations on free checked baggage and purchased prepaid baggage, passenger can purchase excess baggage for the exceeding portion.
[H3] How to buy excess baggage at the airport
Excess baggage can be purchased at Vietnam Airlines' airport ticket offices. Excess baggage purchased at the airport is classified into three categories: standard excess baggage pieces, oversized pieces and overweight pieces.
[H3] Standard of excess baggage at the airport
[H4] Standard excess baggage
On Vietnam domestic and international routes, an excess piece purchased on flights operated by Vietnam Airlines and Pacific Airlines has a maximum weight of 23kg and the total three-dimensional length of a piece must not exceed 158cm.
[H4] Oversized piece
The total three-dimension length oversized baggage is between 158cm and 203cm.
[H4] Overweight piece
On Vietnam domestic and international routes, an overweight piece is between 23kg and 32kg.
Notes: If one piece exceeds the standard weight, size, the passenger shall pay for the standard excess baggage piece (in addition to free baggage standard, excluding prepaid baggage purchased) + extra rate for overweight + extra rate for oversize.
[H3] Rate of excess baggage at the airport
Passengers can find the details of excess baggage rate at the airport here.

[H2] Related Information

A combined rail and flight product

Advance seat selection

Airport ride-hailing service

Booking hotel

E-voucher

Excess baggage

Lotusmiles Business Lounge

Pre-purchase LotusDeli products

Secure my fare

Sky Sofa

Transit tour

Travel Ready insurance

TripCARE Insurance

Upgrade

Viettel international service plan

[H5] Are you satisfied with the information found?

[IMG: 1-star]

[IMG: 1-star]

Very dissatisfied

[IMG: 2-stars]

[IMG: 2-stars]

Dissatisfied

[IMG: 3-stars]

[IMG: 3-stars]

Normal

[IMG: 4-stars]

[IMG: 4-stars]

Satisfied

[IMG: 5-stars]

[IMG: 5-stars]

Very satisfied

[H6]
What make you dissatisfied with?
[H6]
What make you dissatisfied with?

Unclear and confusing information

Insuffcient information

Outdated information

Not user-friendly display

Not user-friendly display

Other

Flight selection

Passenger information

Additional services

Seat selection

Payment

Other

Pre-paid baggage

Upgrades

Seat selection

Flight exchange

Refund ticket

Other

[H6]
What can we do to improve this?
[H6]
What can we do to improve this?
[H6]
What information are you looking for?
[H6]
What information are you looking for?

If you require a response, please access our Feedback page.

Service feedback.

0/200

Send feedback

[IMG: thanks]

[H5]
Thank you for your feedback!
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