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Cheap flights from Seattle to Bucharest from $378

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Seattle to Bucharest departing on 9/4. 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

British Airways Logo
2:25 pm - 2:45 pmSEA-OTP
15h 20m1 stop
British Airways Logo
4:35 pm - 4:55 pmOTP-SEA
34h 20m1 stop
$598British Airways
Find Deal
Tue, Oct 28 - Thu, Nov 6
British Airways Logo
2:25 pm - 2:45 pmSEA-OTP
15h 20m1 stop
British Airways Logo
8:00 am - 4:55 pmOTP-SEA
18h 55m1 stop
$603British Airways
Find Deal
Tue, Oct 28 - Thu, Nov 6
Logo
9:20 am - 2:45 pmSEA-OTP
20h 25m2 stops
Logo
8:00 am - 4:55 pmOTP-SEA
18h 55m1 stop
$610
Find Deal
Tue, Oct 28 - Thu, Nov 6
Air Canada Logo
8:15 am - 3:45 pmSEA-OTP
22h 30m2 stops
Air Canada Logo
5:50 am - 7:16 pmOTP-SEA
23h 26m2 stops
$619Air Canada
Find Deal
Tue, Oct 28 - Thu, Nov 6
Turkish Airlines Logo
7:10 pm - 8:10 amSEA-OTP
27h 00m1 stop
Turkish Airlines Logo
9:35 am - 10:35 amOTP-SEA
35h 00m1 stop
$620Turkish Airlines
Find Deal
Fri, Sep 19 - Wed, Oct 1
Logo
7:44 am - 2:45 pmSEA-OTP
22h 01m2 stops
Logo
8:00 am - 11:18 pmOTP-SEA
25h 18m2 stops
$621
Find Deal
Tue, Oct 28 - Thu, Nov 6
Turkish Airlines Logo
12:30 pm - 8:25 pmSEA-OTP
21h 55m1 stop
Turkish Airlines Logo
9:30 am - 5:15 pmOTP-SEA
17h 45m1 stop
$628Turkish Airlines
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Tue, Sep 16 - Tue, Sep 23
Air Canada Logo
7:15 pm - 6:35 pmSEA-OTP
37h 20m2 stops
Air Canada Logo
5:55 am - 10:06 pmOTP-SEA
25h 11m2 stops
$741Air Canada
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Sun, Sep 28 - Sat, Nov 1
Lufthansa Logo
7:00 am - 6:35 pmSEA-OTP
25h 35m2 stops
Lufthansa Logo
5:55 am - 1:10 pmOTP-SEA
16h 15m1 stop
$750Lufthansa
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Mon, Sep 29 - Sat, Nov 1
Lufthansa Logo
2:00 pm - 11:30 pmSEA-OTP
23h 30m2 stops
Lufthansa Logo
6:00 am - 11:55 amOTP-SEA
15h 55m1 stop
$758Lufthansa
Find Deal
Tue, Sep 16 - Tue, Sep 23

British Airways flights from Seattle to Bucharest

Our best British Airways deals on Seattle to Bucharest flight tickets
British Airways
Oct 28
SEA2:25 pmSeattle/Tacoma Intl
15h 20m
1 stop
OTP2:45 pmBucharest Otopeni Intl
Nov 6
OTP4:35 pmBucharest Otopeni Intl
34h 20m
1 stop
SEA4:55 pmSeattle/Tacoma Intl
$598
Find similar
British Airways
Oct 28
SEA2:25 pmSeattle/Tacoma Intl
15h 20m
1 stop
OTP2:45 pmBucharest Otopeni Intl
Nov 6
OTP8:00 amBucharest Otopeni Intl
18h 55m
1 stop
SEA4:55 pmSeattle/Tacoma Intl
$603
Find similar
British Airways
Oct 28
SEA2:25 pmSeattle/Tacoma Intl
15h 20m
1 stop
OTP2:45 pmBucharest Otopeni Intl
Nov 6
OTP8:00 amBucharest Otopeni Intl
25h 18m
2 stops
SEA11:18 pmSeattle/Tacoma Intl
$608
Find similar

Air Canada flights from Seattle to Bucharest

Our best Air Canada deals on Seattle to Bucharest flight tickets
Air Canada
Oct 28
SEA8:15 amSeattle/Tacoma Intl
22h 30m
2 stops
OTP3:45 pmBucharest Otopeni Intl
Nov 6
OTP5:50 amBucharest Otopeni Intl
23h 26m
2 stops
SEA7:16 pmSeattle/Tacoma Intl
$619
Find similar
Air Canada
Sep 28
SEA7:15 pmSeattle/Tacoma Intl
37h 20m
2 stops
OTP6:35 pmBucharest Otopeni Intl
Nov 1
OTP5:55 amBucharest Otopeni Intl
25h 11m
2 stops
SEA10:06 pmSeattle/Tacoma Intl
$741
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 August 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

Tue 10/28

2:25 pm-2:45 pm

1 stop15h 20m

Bucharest Otopeni Intl

Thu 11/6

4:35 pm-4:55 pm

1 stop34h 20m

$598

SeattleBucharest

SEA - OTP

SEAOTP

Seattle/Tacoma Intl

Tue 10/28

2:25 pm-2:45 pm

1 stop15h 20m

Bucharest Otopeni Intl

Thu 11/6

8:00 am-4:55 pm

1 stop18h 55m

$603

SeattleBucharest

SEA - OTP

SEAOTP

Seattle/Tacoma Intl

Tue 10/28

9:20 am-2:45 pm

2 stops20h 25m

Bucharest Otopeni Intl

Thu 11/6

8:00 am-4:55 pm

1 stop18h 55m

$610

SeattleBucharest

SEA - OTP

SEAOTP

Seattle/Tacoma Intl

Tue 10/28

8:15 am-3:45 pm

2 stops22h 30m

Bucharest Otopeni Intl

Thu 11/6

5:50 am-7:16 pm

2 stops23h 26m

$619

SeattleBucharest

SEA - OTP

SEAOTP

Seattle/Tacoma Intl

Fri 9/19

7:10 pm-8:10 am

1 stop27h 00m

Bucharest Otopeni Intl

Wed 10/1

9:35 am-10:35 am

1 stop35h 00m

$620

SeattleBucharest

SEA - OTP

SEAOTP

Seattle/Tacoma Intl

Tue 10/28

7:44 am-2:45 pm

2 stops22h 01m

Bucharest Otopeni Intl

Thu 11/6

8:00 am-11:18 pm

2 stops25h 18m

$621

SeattleBucharest

SEA - OTP

SEAOTP

Seattle/Tacoma Intl

Tue 9/16

12:30 pm-8:25 pm

1 stop21h 55m

Bucharest Otopeni Intl

Tue 9/23

9:30 am-5:15 pm

1 stop17h 45m

$628

SeattleBucharest

SEA - OTP

SEAOTP

Seattle/Tacoma Intl

Sun 9/28

7:15 pm-6:35 pm

2 stops37h 20m

Bucharest Otopeni Intl

Sat 11/1

5:55 am-10:06 pm

2 stops25h 11m

$741

SeattleBucharest

SEA - OTP

SEAOTP

Seattle/Tacoma Intl

Mon 9/29

7:00 am-6:35 pm

2 stops25h 35m

Bucharest Otopeni Intl

Sat 11/1

5:55 am-1:10 pm

1 stop16h 15m

$750

SeattleBucharest

SEA - OTP

SEAOTP

Seattle/Tacoma Intl

Tue 9/16

2:00 pm-11:30 pm

2 stops23h 30m

Bucharest Otopeni Intl

Tue 9/23

6:00 am-11:55 am

1 stop15h 55m

$758

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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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 typical price of a round-trip flight between Seattle and Bucharest?

What is the cheapest month to fly to Bucharest?

In general, September 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 $731. If you aren’t able to travel to Bucharest during the month of September, then flying in November is also cheap. Prices for this month can be found on momondo for an average of $739.

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 $968 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 $618 on momondo.

Can stopping save me money on Seattle to Bucharest flights?

You could potentially save up to 2% 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 August 2025, prices for Seattle to Bucharest flights are approximately 38% cheaper 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

Direct flights

None
There are no direct flights from Seattle to Bucharest. There are no popular flight routes from Seattle to Bucharest.
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  • 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 40m, 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
LufthansaPriceFrom $585Free CancellationRating
6.8
7,344 reviews
Search Lufthansa flights
Turkish AirlinesPriceFrom $600Free CancellationRating
7.3
3,950 reviews
Search Turkish Airlines flights
United AirlinesPriceFrom $624Free CancellationRating
7.4
8,930 reviews
Search United Airlines flights
DeltaPriceFrom $684Free CancellationRating
7.9
7,981 reviews
Search Delta flights
Air FrancePriceFrom $699Free CancellationRating
7.4
1,469 reviews
Search Air France flights
KLMPriceFrom $705Free CancellationRating
7.8
1,388 reviews
Search KLM 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