$410+ Cheap flights from Seattle (SEA) to Hanoi (HAN)
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/9. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — HAN
Aug 27 — Sep 31
Round-trip
1 adult, Economy
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Find cheap flights from Seattle to Hanoi with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Seattle to Hanoi
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Cheapest flights from Seattle to HanoiExplore the most affordable flight options available from Seattle to Hanoi. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 28, 2026.
Explore the most affordable flight options available from Seattle to Hanoi. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 28, 2026.
This Bravofly deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Bravofly is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/61:55 am
SEA
- HAN
1 stop18h 35m
China Airlines
Mon 9/145:50 pm
HAN
- SEA
1 stop15h 55m
China Airlines
Deal found 7/24![China Airlines logo]()
$768
This Ticket deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Ticket is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/11:55 am
SEA
- HAN
1 stop24h 55m
China Airlines
Mon 9/145:50 pm
HAN
- SEA
1 stop15h 55m
China Airlines
Deal found 7/25![China Airlines logo]()
$778
This Gotogate deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/71:55 am
SEA
- HAN
1 stop24h 55m
China Airlines
Tue 9/155:50 pm
HAN
- SEA
1 stop15h 55m
China Airlines
Deal found 7/24![China Airlines logo]()
$798
This oojo deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/11:55 am
SEA
- HAN
1 stop18h 35m
China Airlines
Sun 9/1311:30 am
HAN
- SEA
1 stop22h 15m
China Airlines
Deal found 7/24![China Airlines logo]()
$803
This oojo deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/311:55 am
SEA
- HAN
1 stop18h 35m
China Airlines
Mon 9/711:30 am
HAN
- SEA
1 stop22h 15m
China Airlines
Deal found 7/25![China Airlines logo]()
$804
This Gotogate deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/91:55 am
SEA
- HAN
1 stop24h 55m
China Airlines
Mon 8/2411:30 am
HAN
- SEA
1 stop22h 15m
China Airlines
Deal found 7/24![China Airlines logo]()
$809
This Ticket deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Ticket is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/212:50 pm
SEA
- HAN
1 stop31h 45m
Korean Air
Mon 9/1412:05 pm
HAN
- SEA
2 stops22h 34m
Korean Air
Deal found 7/25![Korean Air logo]()
$816
This oojo deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/111:15 am
SEA
- HAN
1 stop19h 15m
China Airlines
Sat 12/125:30 pm
HAN
- SEA
1 stop15h 40m
China Airlines
Deal found 7/24![China Airlines logo]()
$818
This oojo deal was found by Cheapflights users on 7/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/311:10 am
SEA
- HAN
1 stop19h 25m
China Airlines
Tue 11/1711:35 am
HAN
- SEA
1 stop21h 35m
China Airlines
Deal found 7/26![China Airlines logo]()
$819
This oojo deal was found by Cheapflights users on 7/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/2412:10 am
SEA
- HAN
1 stop19h 25m
China Airlines
Sun 12/65:30 pm
HAN
- SEA
1 stop15h 40m
China Airlines
Deal found 7/26![China Airlines logo]()
$820
This Bravofly deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Bravofly is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/72:50 pm
SEA
- HAN
2 stops29h 45m
Korean Air
Mon 9/1411:10 pm
HAN
- SEA
2 stops35h 29m
Korean Air
Deal found 7/24![Korean Air logo]()
$822
Best flights from Seattle to HanoiDiscover carefully curated flight deals from Seattle to Hanoi that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 28, 2026.
Discover carefully curated flight deals from Seattle to Hanoi that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 28, 2026.
This Korean Air deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/267:15 am
SEA
- HAN
2 stops23h 30m
Korean Air
Sun 12/611:05 pm
HAN
- SEA
1 stop24h 55m
Korean Air
Deal found 7/27![Korean Air logo]()
$885
This oojo deal was found by Cheapflights users on 7/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/15:45 pm
SEA
- HAN
2 stops33h 45m
Multiple Airlines
Tue 11/177:30 pm
HAN
- SEA
1 stop28h 40m
Multiple Airlines
Deal found 7/23![Multiple Airlines logo]()
$946
This Korean Air deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/107:15 am
SEA
- HAN
2 stops37h 20m
Korean Air
Sun 9/2011:10 pm
HAN
- SEA
2 stops31h 20m
Korean Air
Deal found 7/25![Korean Air logo]()
$896
This Korean Air deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/112:30 pm
SEA
- HAN
2 stops41h 05m
Korean Air
Wed 10/2811:05 pm
HAN
- SEA
1 stop24h 55m
Korean Air
Deal found 7/27![Korean Air logo]()
$897
This Korean Air deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/267:15 am
SEA
- HAN
2 stops36h 55m
Korean Air
Sat 12/511:05 pm
HAN
- SEA
1 stop24h 55m
Korean Air
Deal found 7/27![Korean Air logo]()
$925
This Korean Air deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/307:15 am
SEA
- HAN
2 stops37h 20m
Korean Air
Sat 10/1011:10 pm
HAN
- SEA
1 stop25h 30m
Korean Air
Deal found 7/24![Korean Air logo]()
$925
This Korean Air deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/2410:35 am
SEA
- HAN
2 stops44h 10m
Korean Air
Sat 12/511:05 pm
HAN
- SEA
2 stops36h 26m
Korean Air
Deal found 7/27![Korean Air logo]()
$936
This Korean Air deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/254:36 pm
SEA
- HAN
2 stops38h 09m
Korean Air
Sat 12/512:20 pm
HAN
- SEA
2 stops23h 11m
Korean Air
Deal found 7/27![Korean Air logo]()
$936
This Korean Air deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/137:50 pm
SEA
- HAN
2 stops35h 45m
Korean Air
Thu 9/1711:10 pm
HAN
- SEA
2 stops36h 44m
Korean Air
Deal found 7/27![Korean Air logo]()
$943
This Korean Air deal was found by Cheapflights users on 7/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/15:55 pm
SEA
- HAN
2 stops50h 15m
Korean Air
Tue 11/1712:20 pm
HAN
- SEA
2 stops42h 05m
Korean Air
Deal found 7/23![Korean Air logo]()
$953
This Korean Air deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/512:30 pm
SEA
- HAN
2 stops55h 40m
Korean Air
Sat 11/1412:20 pm
HAN
- SEA
2 stops43h 31m
Korean Air
Deal found 7/27![Korean Air logo]()
$983
Last-minute flights from Seattle to HanoiDiscover last-minute flight deals from Seattle to Hanoi. Data last updated July 28, 2026 and is based on user searches.
Discover last-minute flight deals from Seattle to Hanoi. Data last updated July 28, 2026 and is based on user searches.
This Korean Air deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/54:23 pm
SEA
- HAN
2 stops39h 12m
Korean Air
Thu 8/2012:05 pm
HAN
- SEA
2 stops23h 54m
Korean Air
Deal found 7/25![Korean Air logo]()
$911
This Gotogate deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/91:55 am
SEA
- HAN
1 stop24h 55m
China Airlines
Mon 8/2411:30 am
HAN
- SEA
1 stop22h 15m
China Airlines
Deal found 7/24![China Airlines logo]()
$809
This Trip.com deal was found by Cheapflights users on 7/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/111:55 am
SEA
- HAN
1 stop18h 35m
China Airlines
Sat 8/2211:30 am
HAN
- SEA
1 stop22h 15m
China Airlines
Deal found 7/23![China Airlines logo]()
$876
This oojo deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/131:55 am
SEA
- HAN
1 stop18h 35m
China Airlines
Sun 9/2011:30 am
HAN
- SEA
1 stop21h 45m
China Airlines
Deal found 7/25![China Airlines logo]()
$827
This oojo deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/131:55 am
SEA
- HAN
1 stop18h 35m
China Airlines
Mon 9/2111:30 am
HAN
- SEA
1 stop21h 45m
China Airlines
Deal found 7/24![China Airlines logo]()
$830
This oojo deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/131:55 am
SEA
- HAN
1 stop18h 35m
China Airlines
Sat 9/195:50 pm
HAN
- SEA
1 stop15h 25m
China Airlines
Deal found 7/25![China Airlines logo]()
$852
This oojo deal was found by Cheapflights users on 7/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/1312:10 am
SEA
- HAN
1 stop22h 05m
Asiana Airlines
Mon 9/211:25 pm
HAN
- SEA
1 stop15h 50m
Asiana Airlines
Deal found 7/26![Asiana Airlines logo]()
$871
This Bravofly deal was found by Cheapflights users on 7/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Bravofly is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/221:55 am
SEA
- HAN
1 stop18h 35m
China Airlines
Sun 8/305:50 pm
HAN
- SEA
1 stop15h 55m
China Airlines
Deal found 7/26![China Airlines logo]()
$844
This Bravofly deal was found by Cheapflights users on 7/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Bravofly is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/234:28 pm
SEA
- HAN
2 stops28h 07m
Korean Air
Sun 8/3011:10 pm
HAN
- SEA
2 stops31h 27m
Korean Air
Deal found 7/26![Korean Air logo]()
$847
This oojo deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/291:55 am
SEA
- HAN
1 stop18h 35m
China Airlines
Sun 9/1311:30 am
HAN
- SEA
1 stop22h 15m
China Airlines
Deal found 7/27![China Airlines logo]()
$819
One-way flights from Seattle to HanoiSearch for one-way flight options from Seattle to Hanoi. Find affordable one-way fares based on user searches. Data last updated July 28, 2026.
Search for one-way flight options from Seattle to Hanoi. Find affordable one-way fares based on user searches. Data last updated July 28, 2026.
This oojo deal was found by Cheapflights users on 7/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/911:10 pm
SEA
- HAN
1 stop35h 35m
Philippine Airlines
Deal found 7/23![Philippine Airlines logo]()
$410
This oojo deal was found by Cheapflights users on 7/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/812:10 am
SEA
- HAN
1 stop22h 05m
Asiana Airlines
Deal found 7/26![Asiana Airlines logo]()
$425
This oojo deal was found by Cheapflights users on 7/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/2712:10 am
SEA
- HAN
1 stop22h 00m
Asiana Airlines
Deal found 7/26![Asiana Airlines logo]()
$427
This oojo deal was found by Cheapflights users on 7/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/1412:10 am
SEA
- HAN
1 stop22h 05m
Asiana Airlines
Deal found 7/23![Asiana Airlines logo]()
$431
This oojo deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/3112:10 am
SEA
- HAN
1 stop21h 00m
Asiana Airlines
Deal found 7/27![Asiana Airlines logo]()
$434
This CheapOair deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/1612:10 am
SEA
- HAN
1 stop19h 25m
China Airlines
Deal found 7/27![China Airlines logo]()
$436
This FlightHub deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/281:15 am
SEA
- HAN
1 stop25h 35m
China Airlines
Deal found 7/24![China Airlines logo]()
$439
This Kiwi.com deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/2712:10 am
SEA
- HAN
1 stop22h 05m
Asiana Airlines
Deal found 7/24![Asiana Airlines logo]()
$442
This Trip.com deal was found by Cheapflights users on 7/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/1912:10 am
SEA
- HAN
1 stop25h 20m
China Airlines
Deal found 7/26![China Airlines logo]()
$443
This Justfly.com deal was found by Cheapflights users on 7/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/1611:45 am
SEA
- HAN
1 stop32h 10m
Cathay Pacific
Deal found 7/26![Cathay Pacific logo]()
$449
This oojo deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/101:15 pm
SEA
- HAN
1 stop18h 35m
Japan Airlines
Deal found 7/27![Japan Airlines logo]()
$450
Find flight deals from Seattle to Hanoi
Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Hanoi (HAN). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated July 28, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $768 (Bravofly) |
One-way from | $410 (oojo) |
Popular in | December |
Cheapest in | September |
Average price | $1,092 |
Cheapflights Fare Finder
Customize your flight search to find flights from Seattle to Hanoi that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated July 28, 2026.
Use the filters below to find and compare flights from Seattle to Hanoi that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
Quickest round-trip
SeattleHanoi
SEA - HAN
SEAHAN
Seattle/Tacoma Intl
Thu 11/26
7:15 am-9:45 pm
2 stops23h 30m
Hanoi Noibai
Sun 12/6
11:05 pm-9:00 am
1 stop24h 55m
$885
SeattleHanoi
SEA - HAN
SEAHAN
Seattle/Tacoma Intl
Thu 9/10
7:15 am-10:35 am
2 stops37h 20m
Hanoi Noibai
Sun 9/20
11:10 pm-4:30 pm
2 stops31h 20m
$896
SeattleHanoi
SEA - HAN
SEAHAN
Seattle/Tacoma Intl
Sun 10/11
2:30 pm-9:35 pm
2 stops41h 05m
Hanoi Noibai
Wed 10/28
11:05 pm-10:00 am
1 stop24h 55m
$897
SeattleHanoi
SEA - HAN
SEAHAN
Seattle/Tacoma Intl
Thu 11/26
7:15 am-11:10 am
2 stops36h 55m
Hanoi Noibai
Sat 12/5
11:05 pm-9:00 am
1 stop24h 55m
$925
SeattleHanoi
SEA - HAN
SEAHAN
Seattle/Tacoma Intl
Wed 9/30
7:15 am-10:35 am
2 stops37h 20m
Hanoi Noibai
Sat 10/10
11:10 pm-10:40 am
1 stop25h 30m
$925
SeattleHanoi
SEA - HAN
SEAHAN
Seattle/Tacoma Intl
Tue 11/24
10:35 am-9:45 pm
2 stops44h 10m
Hanoi Noibai
Sat 12/5
11:05 pm-8:31 pm
2 stops36h 26m
$936
SeattleHanoi
SEA - HAN
SEAHAN
Seattle/Tacoma Intl
Wed 11/25
4:36 pm-9:45 pm
2 stops38h 09m
Hanoi Noibai
Sat 12/5
12:20 pm-8:31 pm
2 stops23h 11m
$936
SeattleHanoi
SEA - HAN
SEAHAN
Seattle/Tacoma Intl
Sun 9/13
7:50 pm-9:35 pm
2 stops35h 45m
Hanoi Noibai
Thu 9/17
11:10 pm-9:54 pm
2 stops36h 44m
$943
SeattleHanoi
SEA - HAN
SEAHAN
Seattle/Tacoma Intl
Sun 11/1
5:45 pm-6:30 pm
2 stops33h 45m
Hanoi Noibai
Tue 11/17
7:30 pm-9:10 am
1 stop28h 40m
$946
SeattleHanoi
SEA - HAN
SEAHAN
Seattle/Tacoma Intl
Sun 11/1
5:55 pm-11:10 am
2 stops50h 15m
Hanoi Noibai
Tue 11/17
12:20 pm-3:25 pm
2 stops42h 05m
$953
Showing 1-10 of 21 resultsSorted by cheapest first
Compare providers for flights from Seattle to Hanoi
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Seattle to Hanoi in July.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*1 star | |
| Price Accuracy3 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Seattle-Hanoi flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Seattle-Hanoi flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Seattle-Hanoi flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Seattle-Hanoi flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Seattle-Hanoi flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from Seattle to Hanoi
Have a flexible travel schedule? Discover the best time to fly to Hanoi from Seattle with our price prediction graph.
SEA-HAN
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Seattle to Hanoi
How far ahead should I book a flight from Seattle to Hanoi?
To ensure you get the cheapest price possible for a flight from Seattle to Hanoi, you should look to book at least 86 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.
What is the cheapest month to book a flight from Seattle to Hanoi?
Currently, September is the cheapest month in which you can book a flight from Seattle to Hanoi (average of $657). Flying from Seattle to Hanoi in December is currently the most expensive (average of $1,332). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
How much does it cost to fly round-trip from Seattle to Hanoi?
Airfare is typical for this route at the moment.
Seattle to Hanoi flights typically cost between $741 and $808 in September.The cheapest round-trip price found within the last 5 days was $768 on China Airlines (Sep 6-Sep 14).
Reviews of airlines servicing Hanoi
Get insights into the airlines that provide service to Hanoi. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Hanoi. Reviews last updated July 28, 2026.
Read reviews from past customers who have flown STARLUX Airlines,EVA Air, andKorean Air from Seattle to Hanoi. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Crew
9.1
Entertainment
8.7
Comfort
8.8
Overall
8.8
Boarding
8.9
Food
8.6
Reviews
1 / 14
8.0
ExcellentAndrew,Jun 2026
SEA - TPE
Crew
9.1
Entertainment
8.7
Comfort
8.8
Overall
8.8
Boarding
8.9
Food
8.6
Reviews
1 / 14
8.0
ExcellentAndrew,Jun 2026
SEA - TPE
Crew
9.1
Entertainment
8.7
Comfort
8.8
Overall
8.8
Boarding
8.9
Food
8.6
Reviews
1 / 14
8.0
ExcellentAndrew,Jun 2026
SEA - TPE
Crew
9.1
Entertainment
8.7
Comfort
8.8
Overall
8.8
Boarding
8.9
Food
8.6
Reviews
1 / 14
8.0
ExcellentAndrew,Jun 2026
SEA - TPE
Crew
9.1
Entertainment
8.7
Comfort
8.8
Overall
8.8
Boarding
8.9
Food
8.6
Reviews
1 / 14
8.0
ExcellentAndrew,Jun 2026
SEA - TPE
Crew
9.1
Entertainment
8.7
Comfort
8.8
Overall
8.8
Boarding
8.9
Food
8.6
Reviews
1 / 14
8.0
ExcellentAndrew,Jun 2026
SEA - TPE
Related info for your journey
Find useful and relevant information for your journey from Seattle to Hanoi. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Search flights from Seattle to Hanoi by cabin class
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Other flights to Hanoi
Explore flights to Hanoi departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on July 28, 2026.
Seattle and Hanoi flights
Browse other Seattle and Hanoi flight options. Last updated on July 28, 2026.
Other flights from Seattle
Browse through other flights departing from Seattle. Flights are based on user searches made on Cheapflights and were last updated on July 28, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top 8 airlines flying from Seattle to Hanoi
Discover the top 8 airlines that operate flights from Seattle to Hanoi. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated July 28, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$400 | Average$806 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$521 | Average$744 | FlexibilityNo cancel fee | On-time81% | |
| Cheapest$588 | Average$769 | FlexibilityNo cancel fee | On-time81% | |
| Cheapest$614 | Average$837 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$625 | Average$740 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$638 | Average$681 | FlexibilityNo cancel fee | On-time60% | |
| Cheapest$758 | Average$1,014 | FlexibilityNo cancel fee | On-time74% | |
| Cheapest$771 | Average$929 | FlexibilityNo cancel fee | On-timeN/A |