$290+ Cheap flights from Seattle (SEA) to Hanoi (HAN)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 2/26. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — HAN
Oct 10 — Oct 171
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
Cheapest
Best
Last-minute
One-way
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 September 10, 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 September 10, 2026.
This Trip.com deal was found by Cheapflights users on 9/7. 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.
Sun 10/41:15 am -
1 stop19h 15m
Mon 10/195:50 pm -
1 stop15h 25m
Deal found 9/7![China Airlines logo]()
$784
This CheapOair deal was found by Cheapflights users on 9/6. 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.
Tue 11/2412:10 am -
1 stop19h 25m
Sun 12/611:35 am -
1 stop21h 35m
Deal found 9/6![China Airlines logo]()
$810
This Justfly.com deal was found by Cheapflights users on 9/6. 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.
Mon 11/912:10 am -
1 stop19h 25m
Tue 12/15:30 pm -
1 stop15h 40m
Deal found 9/6![China Airlines logo]()
$812
This FlightHub deal was found by Cheapflights users on 9/10. 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 11/912:10 am -
1 stop25h 20m
Tue 11/175:30 pm -
1 stop15h 40m
Deal found 9/10![China Airlines logo]()
$813
This Trip.com deal was found by Cheapflights users on 9/9. 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 11/2412:10 am -
1 stop19h 25m
Sat 12/511:35 am -
1 stop21h 35m
Deal found 9/9![China Airlines logo]()
$817
This oojo deal was found by Cheapflights users on 9/9. 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 9/1012:25 pm -
1 stop31h 30m
Sun 9/207:10 pm -
1 stop28h 55m
Deal found 9/9![Cathay Pacific logo]()
$820
This Trip.com deal was found by Cheapflights users on 9/9. 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 9/291:15 am -
1 stop19h 15m
Mon 10/125:50 pm -
1 stop15h 25m
Deal found 9/9![China Airlines logo]()
$825
This Gotogate deal was found by Cheapflights users on 9/5. 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.
Thu 9/171:15 am -
1 stop19h 15m
Thu 10/85:50 pm -
1 stop15h 25m
Deal found 9/5![China Airlines logo]()
$830
This Gotogate deal was found by Cheapflights users on 9/6. 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 9/1412:25 pm -
1 stop31h 30m
Sun 9/277:10 pm -
1 stop28h 55m
Deal found 9/6![Cathay Pacific logo]()
$831
This FlightHub deal was found by Cheapflights users on 9/5. 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.
Tue 12/112:10 am -
1 stop19h 25m
Mon 12/2111:35 am -
1 stop21h 35m
Deal found 9/5![China Airlines logo]()
$836
This FlightHub deal was found by Cheapflights users on 9/6. 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 11/912:10 am -
1 stop21h 00m
Wed 11/1811:50 pm -
1 stop29h 05m
Deal found 9/6![Asiana Airlines logo]()
$838
This Korean Air deal was found by Cheapflights users on 9/10. 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 11/1011:00 am -
1 stop33h 10m
Wed 11/1811:05 pm -
1 stop30h 05m
Deal found 9/10![Korean Air logo]()
$840
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 September 10, 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 September 10, 2026.
This Korean Air deal was found by Cheapflights users on 9/9. 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 11/105:57 pm -
2 stops36h 48m
Tue 11/1712:20 pm -
1 stop35h 45m
Deal found 9/9![Korean Air logo]()
$845
This United Airlines deal was found by Cheapflights users on 9/7. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/243:51 pm -
3 stops40h 14m
Sat 4/1011:55 pm -
2 stops38h 38m
Deal found 9/7![United Airlines logo]()
$963
This Korean Air deal was found by Cheapflights users on 9/10. 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.
Mon 11/95:57 pm -
2 stops26h 13m
Mon 11/1612:20 pm -
2 stops24h 44m
Deal found 9/10![Korean Air logo]()
$857
This Korean Air deal was found by Cheapflights users on 9/9. 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 11/12:30 pm -
2 stops40h 15m
Tue 11/1712:20 pm -
1 stop16h 50m
Deal found 9/9![Korean Air logo]()
$857
This Korean Air deal was found by Cheapflights users on 9/9. 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 11/1912:10 am -
1 stop30h 35m
Sun 11/2911:05 pm -
1 stop30h 05m
Deal found 9/9![Korean Air logo]()
$890
This Korean Air deal was found by Cheapflights users on 9/8. 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 -
2 stops31h 40m
Sat 11/1411:05 pm -
1 stop30h 05m
Deal found 9/8![Korean Air logo]()
$895
This Korean Air deal was found by Cheapflights users on 9/8. 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 11/293:13 pm -
2 stops39h 32m
Thu 12/312:20 pm -
1 stop16h 50m
Deal found 9/8![Korean Air logo]()
$900
This Korean Air deal was found by Cheapflights users on 9/8. 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 9/3012:50 pm -
1 stop31h 45m
Sat 10/1012:05 pm -
2 stops22h 22m
Deal found 9/8![Korean Air logo]()
$934
Last-minute flights from Seattle to HanoiDiscover last-minute flight deals from Seattle to Hanoi. Data last updated September 10, 2026 and is based on user searches.
Discover last-minute flight deals from Seattle to Hanoi. Data last updated September 10, 2026 and is based on user searches.
This oojo deal was found by Cheapflights users on 9/9. 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 9/1012:25 pm -
1 stop31h 30m
Sun 9/207:10 pm -
1 stop28h 55m
Deal found 9/9![Cathay Pacific logo]()
$820
This Korean Air deal was found by Cheapflights users on 9/5. 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 -
2 stops37h 20m
Sun 9/2011:10 pm -
1 stop25h 30m
Deal found 9/5![Korean Air logo]()
$886
This Gotogate deal was found by Cheapflights users on 9/6. 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 9/1412:25 pm -
1 stop31h 30m
Sun 9/277:10 pm -
1 stop28h 55m
Deal found 9/6![Cathay Pacific logo]()
$831
This lastminute.com deal was found by Cheapflights users on 9/6. 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 lastminute.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/147:50 pm -
2 stops35h 45m
Sun 9/2711:10 pm -
1 stop25h 30m
Deal found 9/6![Korean Air logo]()
$879
This Gotogate deal was found by Cheapflights users on 9/5. 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.
Thu 9/171:15 am -
1 stop19h 15m
Thu 10/85:50 pm -
1 stop15h 25m
Deal found 9/5![China Airlines logo]()
$830
This FlightHub deal was found by Cheapflights users on 9/6. 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.
Tue 9/291:15 am -
1 stop19h 15m
Sat 10/1011:30 am -
1 stop21h 45m
Deal found 9/6![China Airlines logo]()
$812
This Trip.com deal was found by Cheapflights users on 9/9. 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 9/291:15 am -
1 stop19h 15m
Mon 10/125:50 pm -
1 stop15h 25m
Deal found 9/9![China Airlines logo]()
$825
This Trip.com deal was found by Cheapflights users on 9/7. 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.
Sun 10/41:15 am -
1 stop19h 15m
Mon 10/195:50 pm -
1 stop15h 25m
Deal found 9/7![China Airlines logo]()
$784
This Booking.com deal was found by Cheapflights users on 9/8. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/51:15 am -
1 stop19h 15m
Tue 10/1311:30 am -
1 stop21h 45m
Deal found 9/8![China Airlines logo]()
$856
This Justfly.com deal was found by Cheapflights users on 9/10. 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.
Sat 10/101:15 am -
1 stop25h 35m
Sun 10/255:30 pm -
1 stop15h 40m
Deal found 9/10![China Airlines logo]()
$853
This ScholarTrip deal was found by Cheapflights users on 9/9. 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 ScholarTrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/1911:45 am -
1 stop32h 10m
Wed 11/117:25 pm -
1 stop28h 20m
Deal found 9/9![Cathay Pacific logo]()
$855
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 September 10, 2026.
Search for one-way flight options from Seattle to Hanoi. Find affordable one-way fares based on user searches. Data last updated September 10, 2026.
This oojo deal was found by Cheapflights users on 9/9. 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.
Fri 2/268:40 am -
1 stop39h 30m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/9![Singapore Airlines logo]()
$290
This oojo deal was found by Cheapflights users on 9/6. 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 2/138:40 am -
1 stop39h 30m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/6![Singapore Airlines logo]()
$322
This oojo deal was found by Cheapflights users on 9/5. 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 9/1512:25 pm -
1 stop31h 30m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/5![Cathay Pacific logo]()
$414
This Singapore Airlines deal was found by Cheapflights users on 9/6. 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 Singapore Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/128:40 am -
1 stop39h 30m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/6![Singapore Airlines logo]()
$415
This Kiwi.com deal was found by Cheapflights users on 9/8. 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 2/288:40 am -
2 stops32h 30m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/8![Multiple Airlines logo]()
$420
This Booking.com deal was found by Cheapflights users on 9/7. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 1/1112:10 am -
1 stop19h 25m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/7![China Airlines logo]()
$421
This Booking.com deal was found by Cheapflights users on 9/7. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/2412:10 am -
1 stop19h 25m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/7![China Airlines logo]()
$425
This Kiwi.com deal was found by Cheapflights users on 9/6. 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.
Fri 2/128:40 am -
2 stops32h 30m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/6![Multiple Airlines logo]()
$426
This Booking.com deal was found by Cheapflights users on 9/8. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/3012:10 am -
1 stop25h 20m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/8![China Airlines logo]()
$427
This Justfly.com deal was found by Cheapflights users on 9/10. 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.
Mon 10/121:15 am -
1 stop19h 15m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/10![China Airlines logo]()
$428
This Kiwi.com deal was found by Cheapflights users on 9/6. 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.
Mon 2/1510:25 am -
1 stop32h 40m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/6![Cathay Pacific logo]()
$430
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 September 10, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $644 (oojo) |
One-way from | $290 (oojo) |
Popular in | December |
Cheapest in | September |
Average price | $662 |
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 7,457,451 searches. Data last updated September 10, 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
SeattleHanoi
SEA Seattle/Tacoma Intl - HAN Hanoi Noibai
SEAHAN
Seattle/Tacoma Intl
Tue 9/15
12:25 pm-9:55 am
1 stop31h 30m
Hanoi Noibai
Wed 12/31
12:00 am-8:00 am
Nonstop0h 00m
$414
SeattleHanoi
SEA Seattle/Tacoma Intl - HAN Hanoi Noibai
SEAHAN
Seattle/Tacoma Intl
Tue 10/27
1:10 am-4:30 pm
1 stop25h 20m
Hanoi Noibai
Wed 12/31
12:00 am-8:00 am
Nonstop0h 00m
$428
Quickest round-trip
SeattleHanoi
SEA Seattle/Tacoma Intl - HAN Hanoi Noibai
SEAHAN
Seattle/Tacoma Intl
Thu 11/5
12:30 pm-9:45 pm
1 stop18h 15m
Hanoi Noibai
Wed 12/31
12:00 am-8:00 am
Nonstop0h 00m
$433
SeattleHanoi
SEA Seattle/Tacoma Intl - HAN Hanoi Noibai
SEAHAN
Seattle/Tacoma Intl
Thu 11/12
12:30 pm-11:10 am
1 stop31h 40m
Hanoi Noibai
Wed 12/31
12:00 am-8:00 am
Nonstop0h 00m
$433
SeattleHanoi
SEA Seattle/Tacoma Intl - HAN Hanoi Noibai
SEAHAN
Seattle/Tacoma Intl
Wed 11/4
2:30 pm-11:10 am
2 stops29h 40m
Hanoi Noibai
Wed 12/31
12:00 am-8:00 am
Nonstop0h 00m
$441
SeattleHanoi
SEA Seattle/Tacoma Intl - HAN Hanoi Noibai
SEAHAN
Seattle/Tacoma Intl
Wed 11/25
12:20 pm-11:05 pm
3 stops43h 45m
Hanoi Noibai
Wed 12/31
12:00 am-8:00 am
Nonstop0h 00m
$461
SeattleHanoi
SEA Seattle/Tacoma Intl - HAN Hanoi Noibai
SEAHAN
Seattle/Tacoma Intl
Tue 9/29
7:15 am-9:35 pm
2 stops24h 20m
Hanoi Noibai
Wed 12/31
12:00 am-8:00 am
Nonstop0h 00m
$462
SeattleHanoi
SEA Seattle/Tacoma Intl - HAN Hanoi Noibai
SEAHAN
Seattle/Tacoma Intl
Sun 2/28
3:51 pm-11:05 pm
3 stops40h 14m
Hanoi Noibai
Wed 12/31
12:00 am-8:00 am
Nonstop0h 00m
$501
SeattleHanoi
SEA Seattle/Tacoma Intl - HAN Hanoi Noibai
SEAHAN
Seattle/Tacoma Intl
Thu 12/31
3:50 pm-6:55 am
1 stop24h 05m
Hanoi Noibai
Wed 12/31
12:00 am-8:00 am
Nonstop0h 00m
$518
SeattleHanoi
SEA Seattle/Tacoma Intl - HAN Hanoi Noibai
SEAHAN
Seattle/Tacoma Intl
Tue 10/13
7:16 am-9:35 pm
2 stops24h 19m
Hanoi Noibai
Wed 12/31
12:00 am-8:00 am
Nonstop0h 00m
$534
Showing 1-10 of 20 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 September.
| 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 $662). Flying from Seattle to Hanoi in December is currently the most expensive (average of $1,195). 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 $633 and $904 in January.The cheapest round-trip price found within the last 5 days was $644 on Singapore Airlines (Jan 26-Mar 2).
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 September 10, 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.
Entertainment
8.7
Overall
8.7
Crew
9.1
Boarding
8.8
Food
8.5
Comfort
8.8
Reviews
1 / 15
8.0
ExcellentAnonymous,Jul 2026
TPE - CRK
Entertainment
8.7
Overall
8.7
Crew
9.1
Boarding
8.8
Food
8.5
Comfort
8.8
Reviews
1 / 15
8.0
ExcellentAnonymous,Jul 2026
TPE - CRK
Entertainment
8.7
Overall
8.7
Crew
9.1
Boarding
8.8
Food
8.5
Comfort
8.8
Reviews
1 / 15
8.0
ExcellentAnonymous,Jul 2026
TPE - CRK
Entertainment
8.7
Overall
8.7
Crew
9.1
Boarding
8.8
Food
8.5
Comfort
8.8
Reviews
1 / 15
8.0
ExcellentAnonymous,Jul 2026
TPE - CRK
Entertainment
8.7
Overall
8.7
Crew
9.1
Boarding
8.8
Food
8.5
Comfort
8.8
Reviews
1 / 15
8.0
ExcellentAnonymous,Jul 2026
TPE - CRK
Entertainment
8.7
Overall
8.7
Crew
9.1
Boarding
8.8
Food
8.5
Comfort
8.8
Reviews
1 / 15
8.0
ExcellentAnonymous,Jul 2026
TPE - CRK
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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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 September 10, 2026.
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Top 7 airlines flying from Seattle to Hanoi
Discover the top 7 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 7,457,451 searches. Data last updated September 10, 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$614 | Average$877 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$625 | Average$750 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$668 | Average$782 | FlexibilityNo cancel fee | On-time81% | |
| Cheapest$758 | Average$1,019 | FlexibilityNo cancel fee | On-time74% | |
| Cheapest$758 | Average$842 | FlexibilityNo cancel fee | On-timeN/A |