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Iaşi

$441+ Cheap flights from Seattle (SEA) to Iaşi (IAS)

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 7/14. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — IAS
Jun 8 — Jun 151
Mon 6/8
Mon 6/15
1 adult, Economy
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Cheap flight deals from Seattle to Iaşi

Cheapest flights from Seattle to Iaşi
Explore the most affordable flight options available from Seattle to Iaşi. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 9, 2026.

This Mytrip deal was found by Cheapflights users on 5/8. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/212:10 pm
SEA
-
IAS
2 stops25h 10m
Lufthansa
Wed 10/214:00 pm
IAS
-
SEA
2 stops30h 20m
Lufthansa
Deal found 5/8$982
This Kiwi.com deal was found by Cheapflights users on 5/8. 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.
Mon 9/217:10 pm
SEA
-
IAS
1 stop30h 50m
Multiple Airlines
Wed 10/217:55 pm
IAS
-
SEA
2 stops30h 05m
Multiple Airlines
Deal found 5/8$1,025
This Justfly.com deal was found by Cheapflights users on 5/5. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/108:10 am
SEA
-
IAS
2 stops21h 10m
Multiple Airlines
Sun 5/174:00 pm
IAS
-
SEA
2 stops54h 20m
Multiple Airlines
Deal found 5/5$1,140
This oojo deal was found by Cheapflights users on 5/7. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/217:10 pm
SEA
-
IAS
2 stops27h 40m
Multiple Airlines
Sun 6/282:25 pm
IAS
-
SEA
2 stops30h 15m
Multiple Airlines
Deal found 5/7$1,276
This Gotogate deal was found by Cheapflights users on 5/5. 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.
Wed 6/242:10 pm
SEA
-
IAS
2 stops25h 10m
Lufthansa
Wed 7/224:00 pm
IAS
-
SEA
2 stops34h 59m
Lufthansa
Deal found 5/5$1,319
This Mytrip deal was found by Cheapflights users on 5/5. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/245:45 am
SEA
-
IAS
3 stops30h 45m
Multiple Airlines
Wed 7/227:55 pm
IAS
-
SEA
3 stops46h 00m
Multiple Airlines
Deal found 5/5$1,582

Find flight deals from Seattle to Iaşi

Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Iaşi (IAS). 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 May 9, 2026.

Round-trip from

$982
(Mytrip)

One-way from

$441
(Kiwi.com)
From Seattle/Tacoma Intl to Iasi
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One-way flight from Seattle/Tacoma Intl to Iasi
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Cheapflights Fare Finder

 
Customize your flight search to find flights from Seattle to Iaşi 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 May 9, 2026.
Use the filters below to find and compare flights from Seattle to Iaşi that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SeattleIaşi

SEA - IAS

SEAIAS

Seattle/Tacoma Intl

Sun 6/21

7:10 pm-8:50 am

2 stops27h 40m

Iasi

Sun 6/28

2:25 pm-10:40 am

2 stops30h 15m

$1,276

SeattleIaşi

SEA - IAS

SEAIAS

Seattle/Tacoma Intl

Wed 6/24

5:45 am-10:30 pm

3 stops30h 45m

Iasi

Wed 7/22

7:55 pm-7:55 am

3 stops46h 00m

$1,582

SeattleIaşi

SEA - IAS

SEAIAS

Seattle/Tacoma Intl

Thu 7/16

6:50 pm-3:20 pm

2 stops34h 30m

Iasi

Tue 7/28

4:00 pm-11:55 am

2 stops29h 55m

$6,133

SeattleIaşi

SEA - IAS

SEAIAS

Seattle/Tacoma Intl

Tue 7/14

6:50 pm-3:20 pm

2 stops34h 30m

Iasi

Wed 7/29

5:20 am-4:59 pm

2 stops21h 39m

$6,249

SeattleIaşi

SEA - IAS

SEAIAS

Seattle/Tacoma Intl

Tue 7/14

6:50 pm-3:20 pm

2 stops34h 30m

Iasi

Mon 7/27

4:00 pm-11:55 am

2 stops53h 55m

$6,278

SeattleIaşi

SEA - IAS

SEAIAS

Seattle/Tacoma Intl

Fri 7/17

1:45 pm-7:30 pm

2 stops19h 45m

Iasi

Mon 7/27

2:15 pm-11:33 am

2 stops31h 18m

$8,930
Quickest round-trip

SeattleIaşi

SEA - IAS

SEAIAS

Seattle/Tacoma Intl

Fri 7/17

1:45 pm-7:30 pm

2 stops19h 45m

Iasi

Tue 7/28

2:25 pm-11:33 am

2 stops31h 08m

$8,930

SeattleIaşi

SEA - IAS

SEAIAS

Seattle/Tacoma Intl

Fri 7/17

1:45 pm-7:30 pm

2 stops19h 45m

Iasi

Sun 7/26

2:25 pm-11:33 am

2 stops55h 08m

$8,939
Cheapest one-way

SeattleIaşi

SEA - IAS

SEAIAS

Seattle/Tacoma Intl

Tue 7/14

11:25 pm-10:30 pm

3 stops37h 05m

$441

SeattleIaşi

SEA - IAS

SEAIAS

Seattle/Tacoma Intl

Thu 7/16

3:40 pm-2:00 pm

3 stops36h 20m

$554

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/8

Showing 1-10 of 13 resultsSorted by cheapest first
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Best time to book a flight from Seattle to Iaşi

Have a flexible travel schedule? Discover the best time to fly to Iaşi from Seattle with our price prediction graph.
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.

Related info for your journey

Find useful and relevant information for your journey from Seattle to Iaşi. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • Can I find deals for flights from Seattle to Iaşi that include hotel bookings?

    Yes. In addition to deals on Seattle to Iaşi flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Seattle to Iaşi?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Seattle to Iaşi.

  • Can I find deals for business class flights from Seattle to Iaşi?

    Yes. Cheapflights offers flight deals from Seattle to Iaşi by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

Browse thousands of different options on Cheapflights for your next trip

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