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Cheap flights from Seattle to Bucharest from $518

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Seattle to Bucharest departing on 3/16. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from Seattle to Bucharest

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
8:10 am - 6:35 pm
SEA
-
OTP
25h 25m2 stops
Multiple Airlines Logo
5:55 am - 1:10 pm
OTP
-
SEA
16h 15m1 stop
$518Multiple Airlines
Mon, Mar 16 - Tue, Mar 24
Multiple Airlines Logo
8:10 am - 12:30 am
SEA
-
OTP
30h 20m2 stops
Multiple Airlines Logo
5:55 am - 12:10 pm
OTP
-
SEA
16h 15m1 stop
$521Multiple Airlines
Sun, Jan 18 - Sat, Jan 31
Lufthansa Logo
3:10 pm - 6:35 pm
SEA
-
OTP
17h 25m1 stop
Lufthansa Logo
5:55 am - 12:10 pm
OTP
-
SEA
16h 15m1 stop
$526Lufthansa
Sun, Jan 18 - Sat, Jan 31
Lufthansa Logo
3:10 pm - 6:35 pm
SEA
-
OTP
17h 25m1 stop
Lufthansa Logo
5:55 am - 12:10 pm
OTP
-
SEA
16h 15m1 stop
$530Lufthansa
Wed, Feb 4 - Mon, Feb 16
Lufthansa Logo
3:10 pm - 1:05 am
SEA
-
OTP
23h 55m1 stop
Lufthansa Logo
5:55 am - 12:10 pm
OTP
-
SEA
16h 15m1 stop
$532Lufthansa
Fri, Jan 16 - Mon, Feb 2
British Airways Logo
8:04 am - 7:30 pm
SEA
-
OTP
25h 26m2 stops
British Airways Logo
4:10 pm - 4:55 pm
OTP
-
SEA
34h 45m1 stop
$533British Airways
Thu, Jan 15 - Sun, Feb 1
Lufthansa Logo
3:10 pm - 1:05 am
SEA
-
OTP
23h 55m1 stop
Lufthansa Logo
6:05 am - 1:20 pm
OTP
-
SEA
17h 15m1 stop
$534Lufthansa
Fri, Jan 16 - Sun, Feb 1
Multiple Airlines Logo
2:10 pm - 8:10 pm
SEA
-
OTP
20h 00m1 stop
Multiple Airlines Logo
4:50 pm - 11:40 am
OTP
-
SEA
28h 50m1 stop
$535Multiple Airlines
Sun, Jan 25 - Sun, Feb 1
British Airways Logo
6:50 pm - 7:30 pm
SEA
-
OTP
14h 40m1 stop
British Airways Logo
4:10 pm - 4:55 pm
OTP
-
SEA
34h 45m1 stop
$536British Airways
Thu, Jan 15 - Sun, Feb 1
British Airways Logo
2:04 pm - 11:45 pm
SEA
-
OTP
23h 41m2 stops
British Airways Logo
7:35 am - 10:20 pm
OTP
-
SEA
24h 45m2 stops
$537British Airways
Sun, Jan 25 - Sun, Feb 1

British Airways flights from Seattle to Bucharest

Our best British Airways deals on Seattle to Bucharest flight tickets
British Airways
Mar 24
SEA7:50 pmSeattle/Tacoma Intl
18h 05m
1 stop
OTP10:55 pmBucharest Otopeni Intl
Apr 8
OTP8:25 amBucharest Otopeni Intl
20h 00m
1 stop
SEA6:25 pmSeattle/Tacoma Intl
$509
Find similar
British Airways
May 13
SEA1:35 pmSeattle/Tacoma Intl
14h 55m
1 stop
OTP2:30 pmBucharest Otopeni Intl
Jun 4
OTP8:25 amBucharest Otopeni Intl
20h 00m
1 stop
SEA6:25 pmSeattle/Tacoma Intl
$526
Find similar
British Airways
Mar 24
SEA7:15 amSeattle/Tacoma Intl
30h 40m
2 stops
OTP10:55 pmBucharest Otopeni Intl
Apr 8
OTP8:25 amBucharest Otopeni Intl
20h 00m
1 stop
SEA6:25 pmSeattle/Tacoma Intl
$529
Find similar

Lufthansa flights from Seattle to Bucharest

Our best Lufthansa deals on Seattle to Bucharest flight tickets
Lufthansa
Feb 4
SEA3:10 pmSeattle/Tacoma Intl
17h 25m
1 stop
OTP6:35 pmBucharest Otopeni Intl
Feb 16
OTP5:55 amBucharest Otopeni Intl
16h 15m
1 stop
SEA12:10 pmSeattle/Tacoma Intl
$532
Find similar
Lufthansa
Jan 16
SEA3:10 pmSeattle/Tacoma Intl
23h 55m
1 stop
OTP1:05 amBucharest Otopeni Intl
Feb 1
OTP6:05 amBucharest Otopeni Intl
17h 15m
1 stop
SEA1:20 pmSeattle/Tacoma Intl
$534
Find similar
Lufthansa
Jan 17
SEA2:00 pmSeattle/Tacoma Intl
14h 05m
1 stop
OTP2:05 pmBucharest Otopeni Intl
Jan 31
OTP5:55 amBucharest Otopeni Intl
16h 15m
1 stop
SEA12:10 pmSeattle/Tacoma Intl
$544
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Seattle to Bucharest 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, momondo users made 832,500 searches. Data last updated December 21, 2025.
Use the filters below to find and compare flights from Seattle to Bucharest that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

SeattleBucharest

SEA - OTP

SEAOTP

Seattle/Tacoma Intl

Mon 3/16

8:10 am-6:35 pm

2 stops25h 25m

Bucharest Otopeni Intl

Tue 3/24

5:55 am-1:10 pm

1 stop16h 15m

$518

SeattleBucharest

SEA - OTP

SEAOTP

Seattle/Tacoma Intl

Sun 1/18

8:10 am-12:30 am

2 stops30h 20m

Bucharest Otopeni Intl

Sat 1/31

5:55 am-12:10 pm

1 stop16h 15m

$521

SeattleBucharest

SEA - OTP

SEAOTP

Seattle/Tacoma Intl

Sun 1/18

3:10 pm-6:35 pm

1 stop17h 25m

Bucharest Otopeni Intl

Sat 1/31

5:55 am-12:10 pm

1 stop16h 15m

$526

SeattleBucharest

SEA - OTP

SEAOTP

Seattle/Tacoma Intl

Wed 2/4

3:10 pm-6:35 pm

1 stop17h 25m

Bucharest Otopeni Intl

Mon 2/16

5:55 am-12:10 pm

1 stop16h 15m

$530

SeattleBucharest

SEA - OTP

SEAOTP

Seattle/Tacoma Intl

Fri 1/16

3:10 pm-1:05 am

1 stop23h 55m

Bucharest Otopeni Intl

Mon 2/2

5:55 am-12:10 pm

1 stop16h 15m

$532

SeattleBucharest

SEA - OTP

SEAOTP

Seattle/Tacoma Intl

Thu 1/15

8:04 am-7:30 pm

2 stops25h 26m

Bucharest Otopeni Intl

Sun 2/1

4:10 pm-4:55 pm

1 stop34h 45m

$533

SeattleBucharest

SEA - OTP

SEAOTP

Seattle/Tacoma Intl

Fri 1/16

3:10 pm-1:05 am

1 stop23h 55m

Bucharest Otopeni Intl

Sun 2/1

6:05 am-1:20 pm

1 stop17h 15m

$534

SeattleBucharest

SEA - OTP

SEAOTP

Seattle/Tacoma Intl

Sun 1/25

2:10 pm-8:10 pm

1 stop20h 00m

Bucharest Otopeni Intl

Sun 2/1

4:50 pm-11:40 am

1 stop28h 50m

$535

SeattleBucharest

SEA - OTP

SEAOTP

Seattle/Tacoma Intl

Thu 1/15

6:50 pm-7:30 pm

1 stop14h 40m

Bucharest Otopeni Intl

Sun 2/1

4:10 pm-4:55 pm

1 stop34h 45m

$536

SeattleBucharest

SEA - OTP

SEAOTP

Seattle/Tacoma Intl

Sun 1/25

2:04 pm-11:45 pm

2 stops23h 41m

Bucharest Otopeni Intl

Sun 2/1

7:35 am-10:20 pm

2 stops24h 45m

$537

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 13 resultsSorted by cheapest first
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See travel insights to Bucharest from

How to get the cheapest flight ticket from Seattle to Bucharest

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Bucharest?

In general, November is the cheapest month to fly from Seattle to Bucharest. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $605. If you aren’t able to travel to Bucharest during the month of November, then flying in January is also cheap. Prices for this month can be found on momondo for an average of $629.

What is the cheapest day to depart on your flight to Bucharest?

Our data shows that Tuesday is the least expensive day to fly to Bucharest. Tickets to fly out on this day can be as low as $963. The most expensive day to fly to Bucharest is Saturday, with ticket prices averaging around $1,512.

What is the cheapest time of day to depart on your flight to Bucharest?

According to our data, the cheapest time of day to fly to Bucharest is in the evening. momondo users have found flights departing from Seattle to Bucharest in the evening for as low as $792. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. In contrast, the most expensive time of day to depart to Bucharest is at noon when prices are around $1,144.

How far in advance should I book a flight to Bucharest?

You are more likely to see cheaper flights to Bucharest from Seattle when booking weeks ahead of your departure date. In general, you can expect to find flights to Bucharest for around $949 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Bucharest from Seattle for as low as $617 on momondo.

Can stopping save me money on Seattle to Bucharest flights?

You could potentially save up to 23% on your flight if you consider stops on a Seattle to Bucharest flight.

How have Seattle to Bucharest flight prices changed over time?

As of December 2025, prices for Seattle to Bucharest flights are approximately 21% more expensive when compared to flights at the same time last year.

When to book flights from Seattle to Bucharest

Are you open to changing your travel dates? Check out the ideal times to fly from Seattle to Bucharest according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Seattle to Bucharest (SEA to BUH) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Seattle to Bucharest

Fastest flight time

14h 55m

Direct flights

None
The fastest flight from Seattle to Bucharest takes 14h 55m
There are no direct flights from Seattle to Bucharest. There are no popular flight routes from Seattle to Bucharest.
Search flight deals

  • How far is Seattle/Tacoma Intl to Bucharest by plane?

    Seattle/Tacoma Intl and Bucharest are 5790.4 mi apart from one another. Flights usually cover this in 14h 55m, depending on flying conditions and air traffic around both airports.

  • When did momondo last update prices for flights from Seattle/Tacoma Intl Airport to Bucharest?

    Prices for flights from Seattle/Tacoma Intl Airport to Bucharest refresh daily.

  • How many operators does momondo search for flights from Seattle/Tacoma Intl Airport to Bucharest?

  • How old do you have to be to fly from Seattle/Tacoma Intl Airport to Bucharest?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Seattle/Tacoma Intl Airport to Bucharest.

  • What documentation or ID do you need to fly to Bucharest?

    The necessary travel and health documents for your Bucharest trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

  • What is the most popular airline from Seattle to Bucharest?

Best airlines flying from Seattle to Bucharest

Compare and see reviews for airlines that fly from Seattle to Bucharest with momondo
Airline
Rating
Free Cancellation
Price
British AirwaysPriceFrom $553Free CancellationRating
6.7
7,600 reviews
Search British Airways flights
LufthansaPriceFrom $581Free CancellationRating
6.8
7,639 reviews
Search Lufthansa flights
United AirlinesPriceFrom $585Free CancellationRating
7.4
9,099 reviews
Search United Airlines flights
Turkish AirlinesPriceFrom $591Free CancellationRating
7.3
4,107 reviews
Search Turkish Airlines flights
KLMPriceFrom $656Free CancellationRating
7.7
1,429 reviews
Search KLM flights
Air FrancePriceFrom $699Free CancellationRating
7.4
1,509 reviews
Search Air France flights
DeltaPriceFrom $772Free CancellationRating
7.9
8,017 reviews
Search Delta flights

Traveling to a place near Bucharest?

Book flights to Bucharest if you plan to visit one of these locations
Otopeni

Why use momondo?

Why should I use momondo to find a flight deal from Seattle to Bucharest?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Seattle to Bucharest. momondo saves you time and could save you money on your trip.

Can I find flights from Seattle to Bucharest with flexible booking policies on momondo?

momondo does allow users to show only those flights to Bucharest from Seattle which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from Seattle to Bucharest?

Once all potential Seattle to Bucharest flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from Seattle to Bucharest right now. Can momondo alert me if prices change?

If you are simply researching potential flights to Bucharest, momondo offers a useful price alert feature which will track prices for flights to Bucharest from Seattle and alert you when they change.

An easier way to manage your Bucharest trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
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Find better results for your trip to Romania

Fly into one of these airports located in Bucharest

Airports listed have a maximum distance of 9.6 mi from Bucharest
Bucharest Otopeni Intl Airport