$677+ Cheap flights from Washington 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
Nov 29 — Dec 61
1 adult, Economy
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1. Tell us where you want to go
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Best flights from Washington to IaşiDiscover carefully curated flight deals from Washington to Iaşi that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 30, 2025.
Discover carefully curated flight deals from Washington to Iaşi that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 30, 2025.
This Austrian Airlines deal was found by Cheapflights users on 10/27. 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 Austrian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/128:29 amSEA - IAS
2 stops21h 51mAustrian Airlines
Mon 3/164:05 pmIAS - SEA
2 stops37h 30mAustrian Airlines
Deal found 10/27![Austrian Airlines logo]()
$677
This Lufthansa deal was found by Cheapflights users on 10/28. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/123:00 pmSEA - IAS
2 stops15h 20mLufthansa
Mon 3/164:05 pmIAS - SEA
2 stops30h 05mLufthansa
Deal found 10/28![Lufthansa logo]()
$694
Cheap flight deals from Washington to Iaşi
Keep the following information in mind while searching for Washington to Iaşi flight deals. Data was last updated October 30, 2025.
Most accurate provider | eDreams 3 stars |
|---|---|
Most trusted provider | eDreams 3 stars |
Round-trip from | $694 (Lufthansa) |
Cheapflights Fare Finder
Customize your flight search to find flights from Washington 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 October 30, 2025.
Use the filters below to find and compare flights from Washington to Iaşi that are best for you.
Fly from
Washington
Fly to
Iaşi
Route
Depart
Return
Price
SeattleIaşi
SEA - IAS
SEAIAS
Seattle/Tacoma Intl
Thu 3/12
8:29 am-3:20 pm
2 stops21h 51m
Iasi
Mon 3/16
4:05 pm-8:35 pm
2 stops37h 30m
$677
SeattleIaşi
SEA - IAS
SEAIAS
Seattle/Tacoma Intl
Thu 3/12
3:00 pm-3:20 pm
2 stops15h 20m
Iasi
Mon 3/16
4:05 pm-1:10 pm
2 stops30h 05m
$694
Best time to book a flight from Washington to Iaşi
Have a flexible travel schedule? Discover the best time to fly to Iaşi from Washington 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.
Cheapflights Insights
Everything you need to know about your flight from Washington to Iaşi
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Alternative routes for Washington to Iaşi
See prices for flight routes from nearby airports that may be better suited for you.
Top airline flying from Washington to Iaşi
Discover the top airline that operate flights from Washington 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 October 30, 2025.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$696 | Average$933 | FlexibilityNo cancel fee | On-time76% |