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Iaşi

$652+ Cheap flights from Seattle (SEA) to Iaşi (IAS)

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 3/12. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — IAS
Oct 17 — Oct 241
Fri 10/17
Fri 10/24
1 adult, Economy
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Cheap 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 September 17, 2025.

Round-trip from

$652
(Austrian Airlines)
From Seattle/Tacoma Intl to Iasi
Search Deals

Find 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 September 17, 2025.

This KAYAK deal was found by Cheapflights users on 9/15. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/243:10 pmSEA - IAS
2 stops38h 10mLufthansa
Wed 1/74:05 pmIAS - SEA
2 stops55h 15mLufthansa
Deal found 9/15$791
This KAYAK deal was found by Cheapflights users on 9/15. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/152:00 pmSEA - IAS
2 stops39h 20mLufthansa
Wed 1/74:05 pmIAS - SEA
2 stops55h 15mLufthansa
Deal found 9/15$866
This KAYAK deal was found by Cheapflights users on 9/15. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/243:10 pmSEA - IAS
2 stops38h 10mLufthansa
Mon 1/54:05 pmIAS - SEA
2 stops55h 15mLufthansa
Deal found 9/15$896
This KAYAK deal was found by Cheapflights users on 9/15. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/232:00 pmSEA - IAS
2 stops39h 20mLufthansa
Wed 1/74:05 pmIAS - SEA
2 stops55h 15mLufthansa
Deal found 9/15$969
This KAYAK deal was found by Cheapflights users on 9/15. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/152:00 pmSEA - IAS
2 stops39h 20mLufthansa
Mon 1/54:05 pmIAS - SEA
2 stops55h 15mLufthansa
Deal found 9/15$971
This KAYAK deal was found by Cheapflights users on 9/15. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/162:00 pmSEA - IAS
2 stops15h 20mLufthansa
Wed 1/74:05 pmIAS - SEA
2 stops55h 15mLufthansa
Deal found 9/15$1,024
This KAYAK deal was found by Cheapflights users on 9/15. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/232:00 pmSEA - IAS
2 stops39h 20mLufthansa
Mon 1/54:05 pmIAS - SEA
2 stops55h 15mLufthansa
Deal found 9/15$1,074
This KAYAK deal was found by Cheapflights users on 9/15. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/162:00 pmSEA - IAS
2 stops15h 20mLufthansa
Mon 1/54:05 pmIAS - SEA
2 stops55h 15mLufthansa
Deal found 9/15$1,129
This KAYAK deal was found by Cheapflights users on 9/15. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/243:10 pmSEA - IAS
2 stops38h 10mLufthansa
Sun 1/44:05 pmIAS - SEA
2 stops54h 05mLufthansa
Deal found 9/15$1,195
This Kiwi.com deal was found by Cheapflights users on 9/15. 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 12/157:00 pmSEA - IAS
1 stop19h 20mMultiple Airlines
Tue 1/68:55 pmIAS - SEA
2 stops32h 30mMultiple Airlines
Deal found 9/15$1,221
This KAYAK deal was found by Cheapflights users on 9/15. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/152:00 pmSEA - IAS
2 stops39h 20mLufthansa
Sun 1/44:05 pmIAS - SEA
2 stops54h 05mLufthansa
Deal found 9/15$1,270
This Kiwi.com deal was found by Cheapflights users on 9/15. 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 12/157:00 pmSEA - IAS
1 stop19h 20mMultiple Airlines
Wed 1/75:25 amIAS - SEA
2 stops24h 00mMultiple Airlines
Deal found 9/15$1,288

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 September 17, 2025.
Use the filters below to find and compare flights from Seattle to Iaşi that are best for you.

Fly from

Seattle

Fly to

Iaşi

Route

Depart

Return

Price

SeattleIaşi

SEA - IAS

SEAIAS

Seattle/Tacoma Intl

Thu 3/12

8:00 am-3:20 pm

2 stops22h 20m

Iasi

Mon 3/16

4:05 pm-8:10 pm

2 stops37h 05m

$652

SeattleIaşi

SEA - IAS

SEAIAS

Seattle/Tacoma Intl

Mon 12/15

2:00 pm-3:20 pm

2 stops39h 20m

Iasi

Wed 1/7

4:05 pm-1:20 pm

2 stops55h 15m

$866

SeattleIaşi

SEA - IAS

SEAIAS

Seattle/Tacoma Intl

Wed 12/24

3:10 pm-3:20 pm

2 stops38h 10m

Iasi

Mon 1/5

4:05 pm-1:20 pm

2 stops55h 15m

$896

SeattleIaşi

SEA - IAS

SEAIAS

Seattle/Tacoma Intl

Tue 12/23

2:00 pm-3:20 pm

2 stops39h 20m

Iasi

Mon 1/5

4:05 pm-1:20 pm

2 stops55h 15m

$1,074

SeattleIaşi

SEA - IAS

SEAIAS

Seattle/Tacoma Intl

Tue 12/16

2:00 pm-3:20 pm

2 stops15h 20m

Iasi

Mon 1/5

4:05 pm-1:20 pm

2 stops55h 15m

$1,129

SeattleIaşi

SEA - IAS

SEAIAS

Seattle/Tacoma Intl

Mon 12/15

7:00 pm-12:20 am

1 stop19h 20m

Iasi

Tue 1/6

8:55 pm-7:25 pm

2 stops32h 30m

$1,221

SeattleIaşi

SEA - IAS

SEAIAS

Seattle/Tacoma Intl

Mon 12/15

2:00 pm-3:20 pm

2 stops39h 20m

Iasi

Sun 1/4

4:05 pm-12:10 pm

2 stops54h 05m

$1,270

SeattleIaşi

SEA - IAS

SEAIAS

Seattle/Tacoma Intl

Mon 12/15

7:00 pm-12:20 am

1 stop19h 20m

Iasi

Mon 1/5

5:25 am-10:14 am

2 stops38h 49m

$1,349

SeattleIaşi

SEA - IAS

SEAIAS

Seattle/Tacoma Intl

Tue 12/16

2:00 pm-3:20 pm

2 stops15h 20m

Iasi

Sun 1/4

4:05 pm-12:10 pm

2 stops54h 05m

$1,428

SeattleIaşi

SEA - IAS

SEAIAS

Seattle/Tacoma Intl

Tue 12/23

11:34 pm-9:00 am

2 stops23h 26m

Iasi

Tue 1/6

8:20 pm-5:05 pm

1 stop30h 45m

$1,492

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/14

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.

Reviews of airlines servicing Iaşi

Get insights into the airlines that provide service to Iaşi. 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 Iaşi. Reviews last updated September 17, 2025.
See what other customers who have flown with Lufthansa from Seattle to Iaşi have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Lufthansa
6.8
Okay
7,409 reviews

Boarding

7.0

Overall

6.8

Comfort

6.8

Crew

7.6

Entertainment

6.4

Food

6.3

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2024

SFO - FRA

Convenient flight to my destination. Good entertainment options on board. I was seated close to some people who had noisy children which made sleeping a bit challenging.
Lufthansa
6.8
Okay
7,409 reviews
Lufthansa
6.8
Okay
7,409 reviews

Boarding

7.0

Overall

6.8

Comfort

6.8

Crew

7.6

Entertainment

6.4

Food

6.3

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2024

SFO - FRA

Convenient flight to my destination. Good entertainment options on board. I was seated close to some people who had noisy children which made sleeping a bit challenging.

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.

  • How long is the flight from Seattle to Iaşi?

    Airlines like Austrian Airlines and Lufthansa fly from Seattle to Iaşi in about 22h 20m. The time it takes to get you to your destination can typically vary by up to 17h. Seattle and Iaşi are separated by a distance of 5648 mi. This flight may include one or multiple stops.

  • 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.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Top airline flying from Seattle to Iaşi

Discover the top airline that operate flights from Seattle to Iaşi. 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 September 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
LufthansaCheapest$696Average$933FlexibilityNo cancel feeOn-time76%

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