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Cheap flights from Washington, D.C. Dulles Intl Airport to Harlingen from $339

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Washington, D.C. Dulles Intl Airport to Harlingen departing on 8/27. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from Washington, D.C. Dulles Intl Airport to Harlingen

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
3:02 pm - 9:52 pm
IAD
-
HRL
7h 50m
1 stop
United Airlines Logo
5:18 pm - 11:55 pm
HRL
-
IAD
5h 37m
1 stop
$339United Airlines
Thu, Aug 27 - Mon, Aug 31
United Airlines Logo
5:15 pm - 9:44 pm
IAD
-
HRL
5h 29m
1 stop
United Airlines Logo
5:16 pm - 11:51 pm
HRL
-
IAD
5h 35m
1 stop
$388United Airlines
Sat, Oct 31 - Tue, Nov 3
United Airlines Logo
1:00 pm - 7:32 pm
IAD
-
HRL
7h 32m
1 stop
United Airlines Logo
5:16 pm - 11:51 pm
HRL
-
IAD
5h 35m
1 stop
$397United Airlines
Sat, Oct 31 - Tue, Nov 3
United Airlines Logo
3:02 pm - 9:52 pm
IAD
-
HRL
7h 50m
1 stop
United Airlines Logo
5:18 pm - 11:55 pm
HRL
-
IAD
5h 37m
1 stop
$401United Airlines
Thu, Aug 27 - Mon, Aug 31
United Airlines Logo
3:02 pm - 9:52 pm
IAD
-
HRL
7h 50m
1 stop
United Airlines Logo
5:18 pm - 9:28 am
HRL
-
IAD
15h 10m
2 stops
$452United Airlines
Thu, Aug 27 - Mon, Aug 31
American Airlines Logo
11:59 am - 7:34 pm
IAD
-
HRL
8h 35m
1 stop
American Airlines Logo
10:45 am - 12:10 am
HRL
-
IAD
12h 25m
2 stops
$461American Airlines
Thu, Jul 9 - Mon, Jul 13
United Airlines Logo
5:15 pm - 9:44 pm
IAD
-
HRL
5h 29m
1 stop
United Airlines Logo
5:16 pm - 11:20 am
HRL
-
IAD
17h 04m
2 stops
$463United Airlines
Sat, Oct 31 - Tue, Nov 3
United Airlines Logo
5:15 pm - 9:44 pm
IAD
-
HRL
5h 29m
1 stop
United Airlines Logo
5:16 pm - 7:24 am
HRL
-
IAD
13h 08m
2 stops
$482United Airlines
Sat, Oct 31 - Tue, Nov 3
United Airlines Logo
5:15 pm - 9:44 pm
IAD
-
HRL
5h 29m
1 stop
United Airlines Logo
5:10 am - 8:33 pm
HRL
-
IAD
14h 23m
3 stops
$489United Airlines
Sat, Oct 31 - Wed, Nov 4
United Airlines Logo
6:30 am - 1:24 pm
IAD
-
HRL
7h 54m
1 stop
United Airlines Logo
5:18 pm - 3:29 pm
HRL
-
IAD
21h 11m
2 stops
$500United Airlines
Thu, Aug 27 - Mon, Aug 31

United Airlines flights from Washington, D.C. Dulles Intl Airport to Harlingen

Our best United Airlines deals on Washington, D.C. Dulles Intl Airport to Harlingen flight tickets
United Airlines
Aug 27
IAD3:02 pmWashington, D.C. Dulles Intl
7h 50m
1 stop
HRL9:52 pmHarlingen Valley Intl
Aug 31
HRL5:18 pmHarlingen Valley Intl
5h 37m
1 stop
IAD11:55 pmWashington, D.C. Dulles Intl
$339
United Airlines
Oct 31
IAD5:15 pmWashington, D.C. Dulles Intl
5h 29m
1 stop
HRL9:44 pmHarlingen Valley Intl
Nov 3
HRL5:16 pmHarlingen Valley Intl
5h 35m
1 stop
IAD11:51 pmWashington, D.C. Dulles Intl
$388
United Airlines
Oct 31
IAD1:00 pmWashington, D.C. Dulles Intl
7h 32m
1 stop
HRL7:32 pmHarlingen Valley Intl
Nov 3
HRL5:16 pmHarlingen Valley Intl
5h 35m
1 stop
IAD11:51 pmWashington, D.C. Dulles Intl
$397

American Airlines flights from Washington, D.C. Dulles Intl Airport to Harlingen

Our best American Airlines deals on Washington, D.C. Dulles Intl Airport to Harlingen flight tickets
American Airlines
Jul 9
IAD11:59 amWashington, D.C. Dulles Intl
8h 35m
1 stop
HRL7:34 pmHarlingen Valley Intl
Jul 13
HRL10:45 amHarlingen Valley Intl
12h 25m
2 stops
IAD12:10 amWashington, D.C. Dulles Intl
$461
American Airlines
Jul 9
IAD11:59 amWashington, D.C. Dulles Intl
8h 35m
1 stop
HRL7:34 pmHarlingen Valley Intl
Jul 13
HRL10:45 amHarlingen Valley Intl
12h 25m
2 stops
IAD12:10 amWashington, D.C. Dulles Intl
$542
American Airlines
Sep 5
IAD6:11 amWashington, D.C. Dulles Intl
13h 02m
1 stop
HRL6:13 pmHarlingen Valley Intl
Sep 8
HRL3:17 pmHarlingen Valley Intl
22h 01m
1 stop
IAD2:18 pmWashington, D.C. Dulles Intl
$547

momondo Fare Finder

 
Customize your flight search to find flights from Washington, D.C. Dulles Intl Airport 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 May 29, 2026.
Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to Harlingen that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Washington, D.C.Harlingen

IAD - HRL

IADHRL

Washington, D.C. Dulles Intl

Thu 8/27

3:02 pm-9:52 pm

1 stop7h 50m

Harlingen Valley Intl

Mon 8/31

5:18 pm-11:55 pm

1 stop5h 37m

$339
Quickest round-trip

Washington, D.C.Harlingen

IAD - HRL

IADHRL

Washington, D.C. Dulles Intl

Sat 10/31

5:15 pm-9:44 pm

1 stop5h 29m

Harlingen Valley Intl

Tue 11/3

5:16 pm-11:51 pm

1 stop5h 35m

$388

Washington, D.C.Harlingen

IAD - HRL

IADHRL

Washington, D.C. Dulles Intl

Sat 10/31

1:00 pm-7:32 pm

1 stop7h 32m

Harlingen Valley Intl

Tue 11/3

5:16 pm-11:51 pm

1 stop5h 35m

$397

Washington, D.C.Harlingen

IAD - HRL

IADHRL

Washington, D.C. Dulles Intl

Thu 8/27

3:02 pm-9:52 pm

1 stop7h 50m

Harlingen Valley Intl

Mon 8/31

5:18 pm-11:55 pm

1 stop5h 37m

$401

Washington, D.C.Harlingen

IAD - HRL

IADHRL

Washington, D.C. Dulles Intl

Thu 8/27

3:02 pm-9:52 pm

1 stop7h 50m

Harlingen Valley Intl

Mon 8/31

5:18 pm-9:28 am

2 stops15h 10m

$452

Washington, D.C.Harlingen

IAD - HRL

IADHRL

Washington, D.C. Dulles Intl

Thu 7/9

11:59 am-7:34 pm

1 stop8h 35m

Harlingen Valley Intl

Mon 7/13

10:45 am-12:10 am

2 stops12h 25m

$461

Washington, D.C.Harlingen

IAD - HRL

IADHRL

Washington, D.C. Dulles Intl

Sat 10/31

5:15 pm-9:44 pm

1 stop5h 29m

Harlingen Valley Intl

Tue 11/3

5:16 pm-11:20 am

2 stops17h 04m

$463

Washington, D.C.Harlingen

IAD - HRL

IADHRL

Washington, D.C. Dulles Intl

Sat 10/31

5:15 pm-9:44 pm

1 stop5h 29m

Harlingen Valley Intl

Tue 11/3

5:16 pm-7:24 am

2 stops13h 08m

$482

Washington, D.C.Harlingen

IAD - HRL

IADHRL

Washington, D.C. Dulles Intl

Sat 10/31

5:15 pm-9:44 pm

1 stop5h 29m

Harlingen Valley Intl

Wed 11/4

5:10 am-8:33 pm

3 stops14h 23m

$489

Washington, D.C.Harlingen

IAD - HRL

IADHRL

Washington, D.C. Dulles Intl

Thu 8/27

6:30 am-1:24 pm

1 stop7h 54m

Harlingen Valley Intl

Mon 8/31

5:18 pm-3:29 pm

2 stops21h 11m

$500

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

See travel insights to Harlingen from

How to get the cheapest flight ticket from Washington, D.C. Dulles Intl Airport 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

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

You could potentially save up to 29% on your flight if you consider stops on a Washington, D.C. Dulles Intl Airport to Harlingen flight.

When to book flights from Washington, D.C. Dulles Intl Airport to Harlingen

Are you open to changing your travel dates? Check out the ideal times to fly from Washington, D.C. Dulles Intl Airport 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. Dulles Intl Airport to Harlingen (IAD to HRL) flight deals and tips

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

Fastest flight time

5h 29m

Direct flights

None
The fastest flight from Washington, D.C. Dulles Intl Airport to Harlingen takes 5h 29m
There are no direct flights from Washington, D.C. Dulles Intl Airport to Harlingen. There are no popular flight routes from Washington, D.C. Dulles Intl Airport to Harlingen.
Search flight deals

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

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

    Washington, D.C. Dulles Intl and Harlingen Valley Intl are 1465.2 mi apart from one another. Flights usually cover this in 5h 29m, depending on flying conditions and air traffic around both airports.

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

    Prices for flights from Washington, D.C. Dulles Intl Airport to Harlingen Valley Intl Airport are refreshed on a daily basis.

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

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

    The travel and health documents you'll need for your trip to Harlingen Valley Intl Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Harlingen Valley Intl Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Why use momondo?

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

Finding the right flight to Harlingen from Washington, D.C. is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Harlingen quick and easy, saving you time and money.

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 all potential Washington, D.C. to Harlingen 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 Washington, D.C. to Harlingen right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Harlingen from Washington, D.C.. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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