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$175+ Cheap flights from Seattle to Brownsville (SEA - BRO)

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 10/21. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — BRO
Oct 17 — Oct 241
Fri 10/17
Fri 10/24
1 adult, Economy
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Cheap flight deals from Seattle to Brownsville

Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Brownsville (BRO). 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 17, 2025.

Round-trip from

$309
(United Airlines)

One-way from

$175
(American Airlines)

Popular in

April

Cheapest in

January

Average price

$638
From Seattle/Tacoma Intl to Brownsville South Padre Is. Intl
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One-way flight from Seattle/Tacoma Intl to Brownsville South Padre Is. Intl
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Highest demand for flights based on searches. 5% potential increase in price ($30 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($18 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from Seattle to Brownsville

Cheapest flights from Seattle to Brownsville
Explore the most affordable flight options available from Seattle to Brownsville. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 17, 2025.

This American Airlines deal was found by Cheapflights users on 9/17. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/215:22 amSEA - BRO
1 stop7h 05mAmerican Airlines
Sun 11/97:17 pmBRO - SEA
1 stop7h 41mAmerican Airlines
Deal found 9/17$329
This American Airlines deal was found by Cheapflights users on 9/16. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/147:44 amSEA - BRO
1 stop8h 24mAmerican Airlines
Fri 10/1710:31 amBRO - SEA
1 stop8h 22mAmerican Airlines
Deal found 9/16$349
This Alaska Airlines deal was found by Cheapflights users on 9/16. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/1312:59 amSEA - BRO
1 stop6h 54mAlaska Airlines
Fri 10/172:57 pmBRO - SEA
1 stop7h 49mAlaska Airlines
Deal found 9/16$449
This United Airlines deal was found by Cheapflights users on 9/17. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/216:35 amSEA - BRO
2 stops11h 01mUnited Airlines
Sun 11/97:15 amBRO - SEA
2 stops11h 00mUnited Airlines
Deal found 9/17$493
This United Airlines deal was found by Cheapflights users on 9/16. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/145:26 pmSEA - BRO
2 stops24h 10mUnited Airlines
Fri 10/175:15 pmBRO - SEA
1 stop8h 00mUnited Airlines
Deal found 9/16$507
This Alaska Airlines deal was found by Cheapflights users on 9/17. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/2012:59 amSEA - BRO
1 stop6h 54mAlaska Airlines
Sun 11/92:48 pmBRO - SEA
1 stop7h 47mAlaska Airlines
Deal found 9/17$587
This United Airlines deal was found by Cheapflights users on 9/17. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/210:25 amSEA - BRO
1 stop7h 11mUnited Airlines
Tue 10/75:15 pmBRO - SEA
2 stops26h 38mUnited Airlines
Deal found 9/17$1,165
This American Airlines deal was found by Cheapflights users on 9/17. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/211:44 amSEA - BRO
1 stop8h 50mAmerican Airlines
Tue 10/72:57 pmBRO - SEA
1 stop8h 51mAmerican Airlines
Deal found 9/17$1,269

Cheapflights Fare Finder

 
Customize your flight search to find flights from Seattle to Brownsville 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 September 17, 2025.
Use the filters below to find and compare flights from Seattle to Brownsville that are best for you.

Fly from

Seattle

Fly to

Brownsville

Route

Depart

Return

Price

SeattleBrownsville

SEA - BRO

SEABRO

Seattle/Tacoma Intl

Wed 1/21

11:54 am-10:23 pm

1 stop8h 29m

Brownsville South Padre Is. Intl

Sat 1/24

6:02 pm-11:11 pm

1 stop7h 09m

$309

SeattleBrownsville

SEA - BRO

SEABRO

Seattle/Tacoma Intl

Wed 1/21

12:40 pm-9:31 pm

1 stop6h 51m

Brownsville South Padre Is. Intl

Sat 1/24

5:25 pm-10:59 pm

1 stop7h 34m

$309

SeattleBrownsville

SEA - BRO

SEABRO

Seattle/Tacoma Intl

Tue 10/14

7:44 am-6:08 pm

1 stop8h 24m

Brownsville South Padre Is. Intl

Fri 10/17

10:31 am-4:53 pm

1 stop8h 22m

$349

SeattleBrownsville

SEA - BRO

SEABRO

Seattle/Tacoma Intl

Tue 10/21

6:30 am-6:08 pm

2 stops9h 38m

Brownsville South Padre Is. Intl

Sun 11/9

5:20 am-10:44 am

1 stop7h 24m

$364

SeattleBrownsville

SEA - BRO

SEABRO

Seattle/Tacoma Intl

Tue 10/21

5:22 am-2:27 pm

1 stop7h 05m

$175

SeattleBrownsville

SEA - BRO

SEABRO

Seattle/Tacoma Intl

Tue 10/21

6:35 am-7:36 pm

2 stops11h 01m

$180

SeattleBrownsville

SEA - BRO

SEABRO

Seattle/Tacoma Intl

Fri 10/17

11:24 pm-9:53 am

1 stop8h 29m

$200

SeattleBrownsville

SEA - BRO

SEABRO

Seattle/Tacoma Intl

Sat 10/4

5:00 am-4:00 pm

2 stops9h 00m

$205

SeattleBrownsville

SEA - BRO

SEABRO

Seattle/Tacoma Intl

Sun 11/9

7:00 am-8:25 pm

2 stops11h 25m

$331

SeattleBrownsville

SEA - BRO

SEABRO

Seattle/Tacoma Intl

Fri 10/17

5:26 pm-4:00 pm

3 stops20h 34m

$335

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/17

Showing 1-10 of 14 results
1
2

Best time to book a flight from Seattle to Brownsville

Have a flexible travel schedule? Discover the best time to fly to Brownsville 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.

Cheapflights Insights

Everything you need to know about your flight from Seattle to Brownsville

What is the cheapest month to book a flight from Seattle to Brownsville?

Currently, August is the cheapest month in which you can book a flight from Seattle to Brownsville (average of $328). Flying from Seattle to Brownsville in March is currently the most expensive (average of $473). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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

Find hourly flight availability from Seattle to Brownsville. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 17, 2025.

A simple way to save on the total cost of your ticket is to fly from Seattle to Brownsville at noon. If you’re flexible enough to do this you can expect to save up to 39% on your trip compared to booking a flight in the morning.

Reviews of airlines servicing Brownsville

Get insights into the airlines that provide service to Brownsville. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Brownsville. Reviews last updated September 17, 2025.
Get a feel of what it's like to fly with Alaska Airlines and American Airlines from Seattle to Brownsville by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Crew

8.5

Overall

8.0

Food

7.1

Comfort

7.8

Entertainment

7.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Sep 2025

SEA - MKE

The crew were excellent, flight good, but the actual space for a person to occupy for 4 hours seems to get smaller and smaller 🤣. I am not overweight, and average height….very uncomfortable,, especially when I couldn’t recliner the seat at all, and the pocket in front doesn’t accommodate a water bottle.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Crew

8.5

Overall

8.0

Food

7.1

Comfort

7.8

Entertainment

7.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Sep 2025

SEA - MKE

The crew were excellent, flight good, but the actual space for a person to occupy for 4 hours seems to get smaller and smaller 🤣. I am not overweight, and average height….very uncomfortable,, especially when I couldn’t recliner the seat at all, and the pocket in front doesn’t accommodate a water bottle.
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Crew

8.5

Overall

8.0

Food

7.1

Comfort

7.8

Entertainment

7.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Sep 2025

SEA - MKE

The crew were excellent, flight good, but the actual space for a person to occupy for 4 hours seems to get smaller and smaller 🤣. I am not overweight, and average height….very uncomfortable,, especially when I couldn’t recliner the seat at all, and the pocket in front doesn’t accommodate a water bottle.

Related info for your journey

Find useful and relevant information for your journey from Seattle to Brownsville. 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 Brownsville?

    American Airlines and United Airlines can get you from Seattle to Brownsville in just under 6h 51m. Your travel time can differ by up to 1h 38m. Seattle and Brownsville are separated by a distance of 2010 mi. This flight may include one or multiple stops.

  • What are the cheapest airlines flying from Seattle to Brownsville round-trip?

    Cheapflights users have booked flights from Seattle to Brownsville round-trip from $266. Another airline that can offer you cheap pricing is Alaska Airlines. You may be able to fly from Seattle to Brownsville for 48% less than the average price by searching for these airlines.

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

    Yes. In addition to deals on Seattle to Brownsville flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Seattle to Brownsville?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Seattle to Brownsville.

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

    Yes. Cheapflights offers flight deals from Seattle to Brownsville by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Seattle to Brownsville?

    Currently, August is the cheapest month in which you can book a flight from Seattle to Brownsville (average of $328). Flying from Seattle to Brownsville in March is currently the most expensive (average of $473). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Top 2 airlines flying from Seattle to Brownsville

Discover the top 2 airlines that operate flights from Seattle to Brownsville. 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 September 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$266Average$456FlexibilityNo cancel feeOn-time71%
Alaska AirlinesCheapest$458Average$722FlexibilityNo cancel feeOn-time75%

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