$336+ 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 9/29. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — IAS
Oct 23 — Oct 301
Round-trip
1 adult, Economy
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Find cheap flights from Seattle to Iaşi 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 Iaşi
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Best
Last-minute
One-way
Cheapest flights from Seattle to IaşiExplore 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 23, 2026.
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 23, 2026.
This Mytrip deal was found by Cheapflights users on 9/20. 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 10/218:25 am -
2 stops30h 55m
Wed 10/284:05 pm -
2 stops37h 51m
Deal found 9/20![Austrian Airlines logo]()
$960
This Mytrip deal was found by Cheapflights users on 9/20. 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 10/213:40 pm -
3 stops23h 40m
Wed 10/289:25 am -
2 stops40h 30m
Deal found 9/20![Multiple Airlines logo]()
$1,095
Best flights from Seattle to IaşiDiscover carefully curated flight deals from Seattle to Iaşi that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 23, 2026.
Discover carefully curated flight deals from Seattle to Iaşi that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 23, 2026.
This Mytrip deal was found by Cheapflights users on 9/20. 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 10/218:25 am -
2 stops30h 55m
Wed 10/284:05 pm -
2 stops37h 51m
Deal found 9/20![Austrian Airlines logo]()
$960
This Mytrip deal was found by Cheapflights users on 9/20. 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 10/213:40 pm -
3 stops23h 40m
Wed 10/289:25 am -
2 stops40h 30m
Deal found 9/20![Multiple Airlines logo]()
$1,095
Last-minute flights from Seattle to IaşiDiscover last-minute flight deals from Seattle to Iaşi. Data last updated September 23, 2026 and is based on user searches.
Discover last-minute flight deals from Seattle to Iaşi. Data last updated September 23, 2026 and is based on user searches.
This Mytrip deal was found by Cheapflights users on 9/20. 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 10/218:25 am -
2 stops30h 55m
Wed 10/284:05 pm -
2 stops37h 51m
Deal found 9/20![Austrian Airlines logo]()
$960
This Mytrip deal was found by Cheapflights users on 9/20. 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 10/213:40 pm -
3 stops23h 40m
Wed 10/289:25 am -
2 stops40h 30m
Deal found 9/20![Multiple Airlines logo]()
$1,095
One-way flights from Seattle to IaşiSearch for one-way flight options from Seattle to Iaşi. Find affordable one-way fares based on user searches. Data last updated September 23, 2026.
Search for one-way flight options from Seattle to Iaşi. Find affordable one-way fares based on user searches. Data last updated September 23, 2026.
This Kiwi.com deal was found by Cheapflights users on 9/20. 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.
Tue 9/293:55 pm -
2 stops44h 35m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/20![Multiple Airlines logo]()
$336
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 September 23, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $960 (Mytrip) |
One-way from | $336 (Kiwi.com) |
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 7,457,451 searches. Data last updated September 23, 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
Cheapest round-trip
Quickest round-trip
SeattleIaşi
SEA Seattle/Tacoma Intl - IAS Iasi
SEAIAS
Seattle/Tacoma Intl
Tue 9/29
3:55 pm-10:30 pm
2 stops44h 35m
Iasi
Wed 12/31
12:00 am-2:00 pm
Nonstop0h 00m
$336
SeattleIaşi
SEA Seattle/Tacoma Intl - IAS Iasi
SEAIAS
Seattle/Tacoma Intl
Wed 10/21
8:25 am-1:20 am
2 stops30h 55m
Iasi
Wed 10/28
4:05 pm-8:56 pm
2 stops37h 51m
$960
SeattleIaşi
SEA Seattle/Tacoma Intl - IAS Iasi
SEAIAS
Seattle/Tacoma Intl
Wed 10/21
3:40 pm-1:20 am
3 stops23h 40m
Iasi
Wed 10/28
9:25 am-4:55 pm
2 stops40h 30m
$1,095
Sorted by cheapest first
- Most accurate provider: When it comes to deals on Seattle-Iaşi flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Seattle-Iaşi flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Seattle-Iaşi flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Seattle-Iaşi 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-Iaşi 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 Iaşi
Have a flexible travel schedule? Discover the best time to fly to Iaşi from Seattle with our price prediction graph.
SEA-IAS
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.
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