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Cheap flights from Washington, D.C. to Harlingen from $145

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Washington, D.C. to Harlingen departing on 8/13. 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
1 adult, Economy, 0 bags

Find the cheapest flights from Washington, D.C. to Harlingen

Cheap round-trip flights

Enter your travel dates to find the best prices.
Southwest Logo
6:10 pm - 10:35 pm
BWI
-
HRL
5h 25m
1 stop
Southwest Logo
4:40 pm - 10:40 pm
HRL
-
BWI
5h 00m
1 stop
$289Southwest
Mon, Aug 17 - Mon, Aug 24
American Airlines Logo
3:55 pm - 10:54 pm
BWI
-
HRL
7h 59m
1 stop
American Airlines Logo
3:17 pm - 11:41 pm
HRL
-
BWI
7h 24m
1 stop
$289American Airlines
Thu, Aug 27 - Mon, Aug 31
Delta Logo
7:30 am - 1:23 pm
BWI
-
HRL
6h 53m
1 stop
Delta Logo
2:13 pm - 9:45 pm
HRL
-
BWI
6h 32m
1 stop
$289Delta
Sat, Oct 31 - Sat, Nov 7
Delta Logo
6:10 am - 1:23 pm
BWI
-
HRL
8h 13m
2 stops
Delta Logo
2:13 pm - 9:45 pm
HRL
-
BWI
6h 32m
1 stop
$294Delta
Sat, Oct 31 - Sat, Nov 7
Southwest Logo
4:30 pm - 10:35 pm
BWI
-
HRL
7h 05m
2 stops
Southwest Logo
6:20 am - 1:05 pm
HRL
-
BWI
5h 45m
1 stop
$294Southwest
Mon, Aug 17 - Mon, Aug 24
Southwest Logo
6:05 am - 1:05 pm
BWI
-
HRL
8h 00m
2 stops
Southwest Logo
7:45 am - 5:15 pm
HRL
-
BWI
8h 30m
2 stops
$299Southwest
Sat, Oct 31 - Sat, Nov 7
Southwest Logo
4:30 pm - 10:35 pm
BWI
-
HRL
7h 05m
2 stops
Southwest Logo
5:30 am - 2:40 pm
HRL
-
BWI
8h 10m
2 stops
$299Southwest
Mon, Aug 17 - Mon, Aug 24
Delta Logo
7:30 am - 1:23 pm
BWI
-
HRL
6h 53m
1 stop
Delta Logo
2:13 pm - 9:45 pm
HRL
-
BWI
6h 32m
1 stop
$324Delta
Thu, Oct 29 - Sun, Nov 1
Southwest Logo
7:10 am - 1:15 pm
BWI
-
HRL
7h 05m
1 stop
Southwest Logo
6:25 pm - 12:35 am
HRL
-
BWI
5h 10m
1 stop
$324Southwest
Thu, Oct 22 - Sun, Oct 25
Southwest Logo
7:10 am - 11:20 am
BWI
-
HRL
5h 10m
1 stop
Southwest Logo
10:55 am - 7:55 pm
HRL
-
BWI
8h 00m
1 stop
$324Southwest
Mon, Aug 24 - Fri, Aug 28

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American Airlines flights from Washington, D.C. to Harlingen

Our best American Airlines deals on Washington, D.C. to Harlingen flight tickets
American Airlines
Aug 27
BWI3:55 pmBaltimore/Washington
7h 59m
1 stop
HRL10:54 pmHarlingen Valley Intl
Aug 31
HRL3:17 pmHarlingen Valley Intl
7h 24m
1 stop
BWI11:41 pmBaltimore/Washington
$327
American Airlines
Aug 27
BWI3:55 pmBaltimore/Washington
7h 59m
1 stop
HRL10:54 pmHarlingen Valley Intl
Aug 31
HRL3:17 pmHarlingen Valley Intl
7h 24m
1 stop
BWI11:41 pmBaltimore/Washington
$331
American Airlines
Aug 27
BWI4:25 pmBaltimore/Washington
7h 29m
2 stops
HRL10:54 pmHarlingen Valley Intl
Aug 31
HRL3:17 pmHarlingen Valley Intl
7h 24m
1 stop
BWI11:41 pmBaltimore/Washington
$367

Delta flights from Washington, D.C. to Harlingen

Our best Delta deals on Washington, D.C. to Harlingen flight tickets
Delta
Oct 31
IAD7:23 amWashington, D.C. Dulles Intl
7h 00m
1 stop
HRL1:23 pmHarlingen Valley Intl
Nov 7
HRL2:13 pmHarlingen Valley Intl
8h 13m
1 stop
IAD11:26 pmWashington, D.C. Dulles Intl
$339
Delta
Oct 31
IAD7:23 amWashington, D.C. Dulles Intl
7h 00m
1 stop
HRL1:23 pmHarlingen Valley Intl
Nov 7
HRL2:13 pmHarlingen Valley Intl
9h 29m
2 stops
IAD12:42 amWashington, D.C. Dulles Intl
$344
Delta
Oct 31
IAD6:05 amWashington, D.C. Dulles Intl
8h 18m
2 stops
HRL1:23 pmHarlingen Valley Intl
Nov 7
HRL2:13 pmHarlingen Valley Intl
8h 03m
2 stops
IAD11:16 pmWashington, D.C. Dulles Intl
$349

momondo Fare Finder

 
Customize your flight search to find flights from Washington, D.C. to Harlingen 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 July 27, 2026.
Use the filters below to find and compare flights from Washington, D.C. to Harlingen that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

BaltimoreHarlingen

BWI - HRL

BWIHRL

Baltimore/Washington

Mon 8/17

6:10 pm-10:35 pm

1 stop5h 25m

Harlingen Valley Intl

Mon 8/24

4:40 pm-10:40 pm

1 stop5h 00m

$289

BaltimoreHarlingen

BWI - HRL

BWIHRL

Baltimore/Washington

Thu 8/27

3:55 pm-10:54 pm

1 stop7h 59m

Harlingen Valley Intl

Mon 8/31

3:17 pm-11:41 pm

1 stop7h 24m

$289

BaltimoreHarlingen

BWI - HRL

BWIHRL

Baltimore/Washington

Sat 10/31

7:30 am-1:23 pm

1 stop6h 53m

Harlingen Valley Intl

Sat 11/7

2:13 pm-9:45 pm

1 stop6h 32m

$289

BaltimoreHarlingen

BWI - HRL

BWIHRL

Baltimore/Washington

Sat 10/31

6:10 am-1:23 pm

2 stops8h 13m

Harlingen Valley Intl

Sat 11/7

2:13 pm-9:45 pm

1 stop6h 32m

$294

BaltimoreHarlingen

BWI - HRL

BWIHRL

Baltimore/Washington

Mon 8/17

4:30 pm-10:35 pm

2 stops7h 05m

Harlingen Valley Intl

Mon 8/24

6:20 am-1:05 pm

1 stop5h 45m

$294

BaltimoreHarlingen

BWI - HRL

BWIHRL

Baltimore/Washington

Sat 10/31

6:05 am-1:05 pm

2 stops8h 00m

Harlingen Valley Intl

Sat 11/7

7:45 am-5:15 pm

2 stops8h 30m

$299

BaltimoreHarlingen

BWI - HRL

BWIHRL

Baltimore/Washington

Mon 8/17

4:30 pm-10:35 pm

2 stops7h 05m

Harlingen Valley Intl

Mon 8/24

5:30 am-2:40 pm

2 stops8h 10m

$299

BaltimoreHarlingen

BWI - HRL

BWIHRL

Baltimore/Washington

Thu 10/29

7:30 am-1:23 pm

1 stop6h 53m

Harlingen Valley Intl

Sun 11/1

2:13 pm-9:45 pm

1 stop6h 32m

$324

BaltimoreHarlingen

BWI - HRL

BWIHRL

Baltimore/Washington

Thu 10/22

7:10 am-1:15 pm

1 stop7h 05m

Harlingen Valley Intl

Sun 10/25

6:25 pm-12:35 am

1 stop5h 10m

$324

BaltimoreHarlingen

BWI - HRL

BWIHRL

Baltimore/Washington

Mon 8/24

7:10 am-11:20 am

1 stop5h 10m

Harlingen Valley Intl

Fri 8/28

10:55 am-7:55 pm

1 stop8h 00m

$324

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

See travel insights to Harlingen from

How to get the cheapest flight ticket from Washington, D.C. to Harlingen

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 Harlingen?

If you aren’t able to travel during the month of November, then book flights to Harlingen from Washington, D.C. during September instead. Flights to Harlingen in September, while not as cheap as those in November, still average around $189.

Can stopping save me money on Washington, D.C. to Harlingen flights?

You could potentially save up to 31% on your flight if you consider stops on a Washington, D.C. to Harlingen flight.

When to book flights from Washington, D.C. to Harlingen

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

Cheap Washington, D.C. to Harlingen (WAS to HRL) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Washington, D.C. to Harlingen

Fastest flight time

5h 25m

Direct flights

None
The fastest flight from Washington, D.C. to Harlingen takes 5h 25m
There are no direct flights from Washington, D.C. to Harlingen. There are no popular flight routes from Washington, D.C. to Harlingen.
Search flight deals

Frequently asked questions about flying from Washington, D.C. to Harlingen

  • How far is Washington, D.C. to Harlingen Valley Intl by plane?

    The distance between Washington, D.C. and Harlingen Valley Intl is about 1482.9 mi. By plane, this route typically takes 5h 25m.

  • When did momondo last update prices for flights from Washington, D.C. to Harlingen Valley Intl Airport?

    Prices for flights from Washington, D.C. to Harlingen Valley Intl Airport refresh daily.

  • How many operators does momondo search for flights from Washington, D.C. to Harlingen Valley Intl Airport?

  • How old do you have to be to fly from Washington, D.C. to Harlingen Valley Intl Airport?

    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 Washington, D.C. to Harlingen Valley Intl Airport.

  • What documentation or ID do you need to fly to Harlingen Valley Intl Airport?

    The required travel and health documents for your Harlingen Valley Intl Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Harlingen Valley Intl Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • What is the most popular airline from Washington, D.C. to Harlingen?

Best airlines flying from Washington, D.C. to Harlingen

Compare and see reviews for airlines that fly from Washington, D.C. to Harlingen with momondo
Airline
Rating
Free Cancellation
Price
SouthwestPriceFrom $286Free CancellationRating
8.0
4,229 reviews
Search Southwest flights

  • Southwest Flights From Washington, D.C. to Harlingen

    Across 3 Southwest flights from Washington, D.C. to Harlingen this week, the average price was $357, with the best Southwest deals starting from $286 round-trip. 4,229 users have rated Southwest on momondo, with an average score of 8.0/10.

Why use momondo?

Why should I use momondo to find a flight deal from Washington, D.C. to Harlingen?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Washington, D.C. to Harlingen. momondo saves you time and could save you money on your trip.

Can I find flights from Washington, D.C. to Harlingen with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Washington, D.C. to Harlingen flights to just show those with flexible booking policies.

How can momondo help me find flights from Washington, D.C. to Harlingen?

Once you have performed a search for Washington, D.C. to Harlingen flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from Washington, D.C. to Harlingen right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Washington, D.C. to Harlingen now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Harlingen and let you know when they change.

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