How long is the flight from Seattle to Iaşi?

Airlines like Austrian Airlines and Lufthansa fly from Seattle to Iaşi in about 15h 20m. The time it takes to get you to your destination can typically vary by up to 6h 31m. Seattle and Iaşi are separated by a distance of 5648 mi. This flight may include one or multiple stops.

In terms of precipitation, rainfall in Iaşi ranges from 0.8 - 2.8 inches per month. June is typically the wettest month, when rainfall can reach 2.8 in. January is typically the driest time to visit Iaşi when rainfall is around 0.8 in.

If weather is an important factor for your trip to Iaşi, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 69.8 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 24.8 F).

What is the cheapest time of day to fly from SEA to IAS?

When flying from Seattle to Iaşi, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Most accurate provider : When it comes to deals on Seattle-Iaşi flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Seattle-Iaşi flight deals on Cheapflights vs. eDreams >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 eDreams the most. eDreams 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.

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.

$944+ Cheap Flights from Seattle to Iaşi

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Find flight deals from Seattle to Iaşi

Best flights from Seattle to Iaşi
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 noviembre 13, 2025.

jue. 3/128:29 amSEA - IAS

2 stops21h 51mAustrian Airlines

lun. 3/164:05 pmIAS - SEA

2 stops37h 30mAustrian Airlines

Deal found 11/12

$1,087

jue. 3/123:00 pmSEA - IAS

2 stops15h 20mLufthansa

lun. 3/164:05 pmIAS - SEA

2 stops30h 05mLufthansa

Deal found 11/10

$1,103

One-way flights from Seattle to Iaşi
Search for one-way flight options from Seattle to Iaşi. Find affordable one-way fares based on user searches. Data last updated noviembre 13, 2025.

dom. 12/219:35 pmSEA - IAS

3 stops51h 50mMultiple Airlines

Deal found 11/12

$944

Cheap flight deals from Seattle to Iaşi

Most accurate provider	eDreams 3 stars
Most trusted provider	eDreams 3 stars
Round-trip from	$1,087 (Austrian Airlines)
One-way from	$944 (Kiwi.com)

Provider with most accurate pricing for Seattle/Tacoma Intl-Iasi flight deals.

Search Deals

Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Iasi flights.

Search Deals

From Seattle/Tacoma Intl to Iasi

Search Deals

One-way flight from Seattle/Tacoma Intl to Iasi

Search Deals

Fly from

Fly to

Route

Depart

Return

Price

SeattleIaşi

SEA - IAS

SEAIAS

Seattle/Tacoma Intl

jue. 3/12

8:29 am-3:20 pm

2 stops21h 51m

Iasi

lun. 3/16

4:05 pm-8:35 pm

2 stops37h 30m

$1,087

SeattleIaşi

SEA - IAS

SEAIAS

Seattle/Tacoma Intl

jue. 3/12

3:00 pm-3:20 pm

2 stops15h 20m

Iasi

lun. 3/16

4:05 pm-1:10 pm

2 stops30h 05m

$1,103

SeattleIaşi

SEA - IAS

SEAIAS

Seattle/Tacoma Intl

dom. 12/21

9:35 pm-11:25 am

3 stops51h 50m

$944

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/12

Compare providers for flights from Seattle to Iaşi

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Seattle to Iaşi in November.

Provider	Price Accuracy	Trust Score*
eDreams	Price Accuracy3 stars	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*1 star

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

Most accurate provider: When it comes to deals on Seattle-Iaşi flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Seattle-Iaşi flight deals on Cheapflights vs. eDreams >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 eDreams the most. eDreams 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.

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

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

7,572 reviews

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

7,572 reviews

Lufthansa

6.8

Okay

7,572 reviews

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

How long is the flight from Seattle to Iaşi?
Airlines like Austrian Airlines and Lufthansa fly from Seattle to Iaşi in about 15h 20m. The time it takes to get you to your destination can typically vary by up to 6h 31m. 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

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Top airline flying from Seattle to Iaşi

Airline	Cheapest	Average	Flexibility	On-time
Lufthansa	Cheapest$696	Average$933	FlexibilityNo cancel fee	On-time76%

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$944+ 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 12/21. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Seattle to Iaşi with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Find flight deals from Seattle to Iaşi

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 noviembre 13, 2025.

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 noviembre 13, 2025.

Cheap flight deals from Seattle to Iaşi

Most accurate provider

Most trusted provider

Round-trip from

One-way from

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

Compare providers for flights from Seattle to Iaşi

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 Iaşi in November.

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.

Reviews of airlines servicing Iaşi

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.

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?

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

How can I find direct flights from Seattle to Iaşi?

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

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.

Alternative routes for Seattle to Iaşi

See prices for flight routes from nearby airports that may be better suited for you.

Top airline flying from Seattle to Iaşi

100% Free

Book with Flexibility

Travel Smart

Best flights from Seattle to Iaşi
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 noviembre 13, 2025.