Latest deals
Insights
FAQs
Reviews
Price Alerts

Cheap flights from Harlingen, Texas to District of Columbia from $284

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Harlingen, Texas to District of Columbia departing on 9/25. 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

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from Harlingen, Texas to District of Columbia

Cheap round-trip flights

American Airlines Logo
6:19 pm - 12:55 amHRL-DCA
5h 36m1 stop
American Airlines Logo
5:00 am - 9:41 amDCA-HRL
5h 41m1 stop
$284American Airlines
Find Deal
Thu, Sep 25 - Mon, Sep 29
American Airlines Logo
10:11 am - 4:50 pmHRL-IAD
5h 39m1 stop
American Airlines Logo
6:25 am - 2:19 pmIAD-HRL
8h 54m1 stop
$359American Airlines
Find Deal
Thu, Sep 25 - Mon, Sep 29
American Airlines Logo
2:51 pm - 10:48 pmHRL-IAD
6h 57m1 stop
American Airlines Logo
5:40 pm - 10:57 pmIAD-HRL
6h 17m1 stop
$370American Airlines
Find Deal
Mon, Sep 15 - Mon, Sep 22
American Airlines Logo
10:11 am - 4:50 pmHRL-IAD
5h 39m1 stop
American Airlines Logo
6:25 am - 2:19 pmIAD-HRL
8h 54m1 stop
$389American Airlines
Find Deal
Thu, Sep 25 - Mon, Sep 29
American Airlines Logo
6:35 pm - 10:07 amHRL-IAD
14h 32m2 stops
American Airlines Logo
7:21 pm - 9:41 amIAD-HRL
15h 20m2 stops
$391American Airlines
Find Deal
Mon, Sep 15 - Mon, Sep 22
United Airlines Logo
5:20 pm - 11:55 pmHRL-IAD
5h 35m1 stop
United Airlines Logo
10:20 pm - 1:30 pmIAD-HRL
16h 10m2 stops
$403United Airlines
Find Deal
Mon, Sep 15 - Mon, Sep 22
American Airlines Logo
6:19 pm - 10:07 amHRL-IAD
14h 48m2 stops
American Airlines Logo
2:21 pm - 9:41 amIAD-HRL
20h 20m2 stops
$416American Airlines
Find Deal
Thu, Sep 25 - Mon, Sep 29
United Airlines Logo
5:17 pm - 11:51 pmHRL-IAD
5h 34m1 stop
United Airlines Logo
8:25 am - 11:18 pmIAD-HRL
15h 53m2 stops
$456United Airlines
Find Deal
Thu, Sep 25 - Mon, Sep 29
United Airlines Logo
5:00 am - 4:23 pmHRL-IAD
10h 23m2 stops
United Airlines Logo
12:50 pm - 7:41 pmIAD-HRL
7h 51m1 stop
$498United Airlines
Find Deal
Thu, Sep 25 - Mon, Sep 29
United Airlines Logo
5:00 am - 11:34 amHRL-DCA
5h 34m1 stop
United Airlines Logo
3:30 pm - 11:18 pmDCA-HRL
8h 48m2 stops
$593United Airlines
Find Deal
Thu, Sep 25 - Mon, Sep 29

United Airlines flights from Harlingen, Texas to District of Columbia

Our best United Airlines deals on Harlingen, Texas to District of Columbia flight tickets
United Airlines
Sep 15
HRL5:20 pmHarlingen Valley Intl
5h 35m
1 stop
IAD11:55 pmWashington, D.C. Dulles Intl
Sep 22
IAD10:20 pmWashington, D.C. Dulles Intl
16h 10m
2 stops
HRL1:30 pmHarlingen Valley Intl
$403
Find similar
United Airlines
Sep 25
HRL5:17 pmHarlingen Valley Intl
5h 34m
1 stop
IAD11:51 pmWashington, D.C. Dulles Intl
Sep 29
IAD8:25 amWashington, D.C. Dulles Intl
15h 53m
2 stops
HRL11:18 pmHarlingen Valley Intl
$456
Find similar
United Airlines
Sep 25
HRL5:00 amHarlingen Valley Intl
10h 23m
2 stops
IAD4:23 pmWashington, D.C. Dulles Intl
Sep 29
IAD12:50 pmWashington, D.C. Dulles Intl
7h 51m
1 stop
HRL7:41 pmHarlingen Valley Intl
$498
Find similar

American Airlines flights from Harlingen, Texas to District of Columbia

Our best American Airlines deals on Harlingen, Texas to District of Columbia flight tickets
American Airlines
Sep 25
HRL6:19 pmHarlingen Valley Intl
5h 36m
1 stop
DCA12:55 amWashington, D.C. Reagan-National
Sep 29
DCA5:00 amWashington, D.C. Reagan-National
5h 41m
1 stop
HRL9:41 amHarlingen Valley Intl
$284
Find similar
American Airlines
Aug 24
HRL6:20 pmHarlingen Valley Intl
5h 45m
1 stop
DCA1:05 amWashington, D.C. Reagan-National
Aug 31
DCA5:00 amWashington, D.C. Reagan-National
5h 32m
1 stop
HRL9:32 amHarlingen Valley Intl
$348
Find similar
American Airlines
Aug 24
HRL2:47 pmHarlingen Valley Intl
7h 12m
1 stop
DCA10:59 pmWashington, D.C. Reagan-National
Aug 31
DCA10:20 amWashington, D.C. Reagan-National
8h 30m
1 stop
HRL5:50 pmHarlingen Valley Intl
$349
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Harlingen, Texas to District of Columbia 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 20, 2025.
Use the filters below to find and compare flights from Harlingen, Texas to District of Columbia that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

HarlingenWashington, D.C.

HRL - DCA

HRLDCA

Harlingen Valley Intl

Thu 9/25

6:19 pm-12:55 am

1 stop5h 36m

Washington, D.C. Reagan-National

Mon 9/29

5:00 am-9:41 am

1 stop5h 41m

$284

HarlingenWashington, D.C.

HRL - IAD

HRLIAD

Harlingen Valley Intl

Thu 9/25

10:11 am-4:50 pm

1 stop5h 39m

Washington, D.C. Dulles Intl

Mon 9/29

6:25 am-2:19 pm

1 stop8h 54m

$359

HarlingenWashington, D.C.

HRL - IAD

HRLIAD

Harlingen Valley Intl

Mon 9/15

2:51 pm-10:48 pm

1 stop6h 57m

Washington, D.C. Dulles Intl

Mon 9/22

5:40 pm-10:57 pm

1 stop6h 17m

$370

HarlingenWashington, D.C.

HRL - IAD

HRLIAD

Harlingen Valley Intl

Thu 9/25

10:11 am-4:50 pm

1 stop5h 39m

Washington, D.C. Dulles Intl

Mon 9/29

6:25 am-2:19 pm

1 stop8h 54m

$389

HarlingenWashington, D.C.

HRL - IAD

HRLIAD

Harlingen Valley Intl

Mon 9/15

6:35 pm-10:07 am

2 stops14h 32m

Washington, D.C. Dulles Intl

Mon 9/22

7:21 pm-9:41 am

2 stops15h 20m

$391

HarlingenWashington, D.C.

HRL - IAD

HRLIAD

Harlingen Valley Intl

Mon 9/15

5:20 pm-11:55 pm

1 stop5h 35m

Washington, D.C. Dulles Intl

Mon 9/22

10:20 pm-1:30 pm

2 stops16h 10m

$403

HarlingenWashington, D.C.

HRL - IAD

HRLIAD

Harlingen Valley Intl

Thu 9/25

6:19 pm-10:07 am

2 stops14h 48m

Washington, D.C. Dulles Intl

Mon 9/29

2:21 pm-9:41 am

2 stops20h 20m

$416

HarlingenWashington, D.C.

HRL - IAD

HRLIAD

Harlingen Valley Intl

Thu 9/25

5:17 pm-11:51 pm

1 stop5h 34m

Washington, D.C. Dulles Intl

Mon 9/29

8:25 am-11:18 pm

2 stops15h 53m

$456

HarlingenWashington, D.C.

HRL - IAD

HRLIAD

Harlingen Valley Intl

Thu 9/25

5:00 am-4:23 pm

2 stops10h 23m

Washington, D.C. Dulles Intl

Mon 9/29

12:50 pm-7:41 pm

1 stop7h 51m

$498

HarlingenWashington, D.C.

HRL - DCA

HRLDCA

Harlingen Valley Intl

Thu 9/25

5:00 am-11:34 am

1 stop5h 34m

Washington, D.C. Reagan-National

Mon 9/29

3:30 pm-11:18 pm

2 stops8h 48m

$593

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

See travel insights to District of Columbia from

How to get the cheapest flight ticket from Harlingen, Texas to District of Columbia

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 day to depart on your flight to District of Columbia?

The cheapest day to depart on your flight to District of Columbia is on a Wednesday when prices can be found for as low as $353. This is often the case because there is less demand to fly during this day of the week. On the other hand, Sunday is the most expensive day to depart from Harlingen, Texas because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $417.

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

Flying to District of Columbia from Harlingen, Texas in the morning is the least expensive time of day to depart. momondo users have found prices as low as $381 when looking at flights departing in the morning. Flights to District of Columbia are more costly in the afternoon, with an average ticket price of $407. Departure times in the afternoon fall within the peak daily travel times, which is why tickets can be more expensive.

Cheap Harlingen, Texas to District of Columbia flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Harlingen, Texas to District of Columbia

Direct flights

None
There are no direct flights from Harlingen, Texas to District of Columbia. There are no popular flight routes from Harlingen, Texas to District of Columbia.
Search flight deals

  • When did momondo last update prices for flights from Harlingen Valley Intl Airport to District of Columbia?

    Prices for flights from Harlingen Valley Intl Airport to District of Columbia refresh daily.

  • How many operators does momondo search for flights from Harlingen Valley Intl Airport to District of Columbia?

  • How old do you have to be to fly from Harlingen Valley Intl Airport to District of Columbia?

    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 Harlingen Valley Intl Airport to District of Columbia.

  • What documentation or ID do you need to fly to District of Columbia?

    The necessary travel and health documents for your District of Columbia 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.

Best airlines flying from Harlingen, Texas to District of Columbia

Compare and see reviews for airlines that fly from Harlingen, Texas to District of Columbia with momondo
Airline
Rating
Free Cancellation
Price
SouthwestPriceFrom $155Free CancellationRating
8.0
4,246 reviews
Search Southwest flights
United AirlinesPriceFrom $306Free CancellationRating
7.4
8,928 reviews
Search United Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from Harlingen to District of Columbia?

It is quick and easy to find Harlingen to District of Columbia flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to District of Columbia that suits you.

Can I find flights from Harlingen to District of Columbia with flexible booking policies on momondo?

Yes. All flights to District of Columbia from Harlingen on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Harlingen to District of Columbia?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Harlingen to District of Columbia.

I’m not ready to book a flight from Harlingen to District of Columbia right now. Can momondo alert me if prices change?

Price alerts on flights to District of Columbia from Harlingen are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

An easier way to manage your District of Columbia 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.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Mon 8/25
Mon 9/1
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to District of Columbia

Popular cities in District of Columbia

Popular flights according to clicks in the last 7 days on momondo
Flights to New Yorkfrom $47
Flights to Los Angelesfrom $47
Flights to Miamifrom $63
Flights to Chicagofrom $45
Flights to Orlandofrom $47
Flights to Las Vegasfrom $25
Flights to San Franciscofrom $54
Flights to Washington, D.C.from $52
Flights to Bostonfrom $47
Flights to Atlantafrom $47
Flights to Dallasfrom $53
Flights to Seattlefrom $75