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Harlingen

$165+ Cheap flights from Detroit to Harlingen (DTT - HRL)

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 5/21. Fares are subject to change and may not be available on all flights or dates of travel.
DTT — HRL
May 23 — May 301
Sat 5/23
Sat 5/30
1 adult, Economy
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Cheap flight deals from Detroit to Harlingen

Cheapest flights from Detroit to Harlingen
Explore the most affordable flight options available from Detroit to Harlingen. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 23, 2026.

This United Airlines deal was found by Cheapflights users on 4/21. 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 9/156:15 am
DTW
-
HRL
1 stop7h 59m
United Airlines
Wed 9/235:15 am
HRL
-
DTW
2 stops9h 13m
United Airlines
Deal found 4/21$222
This United Airlines deal was found by Cheapflights users on 4/21. 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 9/110:55 am
DTW
-
HRL
1 stop5h 39m
United Airlines
Sat 9/125:15 am
HRL
-
DTW
1 stop7h 24m
United Airlines
Deal found 4/21$238
This American Airlines deal was found by Cheapflights users on 4/23. 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 9/156:00 am
DTW
-
HRL
1 stop5h 16m
American Airlines
Wed 9/2310:45 am
HRL
-
DTW
1 stop7h 06m
American Airlines
Deal found 4/23$252
This American Airlines deal was found by Cheapflights users on 4/22. 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 9/15:41 am
DTW
-
HRL
1 stop5h 23m
American Airlines
Sat 9/126:00 am
HRL
-
DTW
2 stops10h 19m
American Airlines
Deal found 4/22$278
This American Airlines deal was found by Cheapflights users on 4/21. 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 9/156:00 am
DTW
-
HRL
1 stop5h 16m
American Airlines
Thu 9/2410:45 am
HRL
-
DTW
1 stop7h 06m
American Airlines
Deal found 4/21$308

Find flight deals from Detroit to Harlingen

Discover tips and strategies to find the most affordable flight options for your journey from Detroit (DTT) to Harlingen (HRL). 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 April 23, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$222
(United Airlines)

One-way from

$165
(American Airlines)

Popular in

December

Cheapest in

October

Average price

$419
Provider with most accurate pricing for Detroit (DTT)-Harlingen Valley Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Detroit (DTT)-Harlingen Valley Intl flights.
Search Deals
From Detroit (DTT) to Harlingen Valley Intl
Search Deals
One-way flight from Detroit (DTT) to Harlingen Valley Intl
Search Deals
Highest demand for flights based on searches. 14% potential increase in price ($65 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 7% potential price decrease ($26 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Detroit 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, Cheapflights users made 2,558,603 searches. Data last updated April 23, 2026.
Use the filters below to find and compare flights from Detroit to Harlingen that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

DetroitHarlingen

DTW - HRL

DTWHRL

Detroit Metropolitan Wayne County

Tue 9/15

6:15 am-1:14 pm

1 stop7h 59m

Harlingen Valley Intl

Wed 9/23

5:15 am-3:28 pm

2 stops9h 13m

$222
Quickest round-trip

DetroitHarlingen

DTW - HRL

DTWHRL

Detroit Metropolitan Wayne County

Tue 9/15

6:25 am-1:00 pm

2 stops7h 35m

Harlingen Valley Intl

Wed 9/23

12:35 pm-8:30 pm

2 stops6h 55m

$339

DetroitHarlingen

DTW - HRL

DTWHRL

Detroit Metropolitan Wayne County

Tue 9/15

10:18 am-7:29 pm

2 stops10h 11m

Harlingen Valley Intl

Thu 9/24

1:59 pm-10:30 pm

1 stop7h 31m

$407

DetroitHarlingen

DTW - HRL

DTWHRL

Detroit Metropolitan Wayne County

Sat 8/15

10:18 am-7:29 pm

2 stops10h 11m

Harlingen Valley Intl

Fri 8/21

2:00 pm-10:24 pm

1 stop7h 24m

$424

DetroitHarlingen

DTW - HRL

DTWHRL

Detroit Metropolitan Wayne County

Thu 5/7

9:19 am-8:00 pm

2 stops11h 41m

Harlingen Valley Intl

Mon 5/11

5:18 pm-11:47 pm

1 stop5h 29m

$439
Cheapest one-way
Quickest one-way

DetroitHarlingen

DTW - HRL

DTWHRL

Detroit Metropolitan Wayne County

Thu 5/21

5:36 am-10:13 am

1 stop5h 37m

$165

DetroitHarlingen

DTW - HRL

DTWHRL

Detroit Metropolitan Wayne County

Sun 5/3

7:00 am-3:05 pm

1 stop9h 05m

$190

DetroitHarlingen

DTW - HRL

DTWHRL

Detroit Metropolitan Wayne County

Wed 5/6

5:00 am-2:17 pm

2 stops10h 17m

$195

DetroitHarlingen

DTW - HRL

DTWHRL

Detroit Metropolitan Wayne County

Wed 4/29

7:00 am-3:05 pm

1 stop9h 05m

$222

DetroitHarlingen

DTW - HRL

DTWHRL

Detroit Metropolitan Wayne County

Wed 4/29

5:00 am-2:17 pm

2 stops10h 17m

$257

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/22

Showing 1-10 of 14 resultsSorted by cheapest first
1
2

Compare providers for flights from Detroit to Harlingen

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Detroit to Harlingen in April.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Detroit-Harlingen flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Detroit-Harlingen flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Detroit-Harlingen flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Detroit-Harlingen flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Detroit-Harlingen flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Detroit to Harlingen

Have a flexible travel schedule? Discover the best time to fly to Harlingen from Detroit 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 Detroit to Harlingen

What is the cheapest month to book a flight from Detroit to Harlingen?

Currently, November is the cheapest month in which you can book a flight from Detroit to Harlingen (average of $128). Flying from Detroit to Harlingen in August is currently the most expensive (average of $318). 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.

Reviews of airlines servicing Harlingen

Get insights into the airlines that provide service to Harlingen. 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 Harlingen. Reviews last updated April 23, 2026.
Peruse reviews from past customers who have flown with American Airlines from Detroit to Harlingen to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
American Airlines
7.1
Good
11,659 reviews

Crew

7.9

Food

6.4

Overall

7.1

Boarding

7.5

Comfort

7.2

Entertainment

6.9

Reviews

1 / 20
8.0
Excellent

Monica,Nov 2025

JAC - DFW

At least there was an option of entertainment on this flight.
American Airlines
7.1
Good
11,659 reviews
American Airlines
7.1
Good
11,659 reviews

Crew

7.9

Food

6.4

Overall

7.1

Boarding

7.5

Comfort

7.2

Entertainment

6.9

Reviews

1 / 20
8.0
Excellent

Monica,Nov 2025

JAC - DFW

At least there was an option of entertainment on this flight.

Related info for your journey

Find useful and relevant information for your journey from Detroit to Harlingen. 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 Detroit to Harlingen?

    United Airlines can get you from Detroit to Harlingen in just under 7h 59m. Your travel time can differ by up to . Airlines will cover a distance of 1369 mi.

  • What are the cheapest airlines flying from Detroit to Harlingen round-trip?

    Currently priced at $128, Delta will fly you from Detroit to Harlingen and back. In addition to Delta, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from American Airlines and United Airlines - these airlines can fly you to your destination from $259 and $288, respectively. Delta is 66% cheaper than the average price of flights available within the next 90 days to this destination.

  • Can I find deals for flights from Detroit to Harlingen that include hotel bookings?

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

  • How can I find direct flights from Detroit to Harlingen?

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

  • Can I find deals for business class flights from Detroit to Harlingen?

    Yes. Cheapflights offers flight deals from Detroit to Harlingen 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 Detroit to Harlingen?

    Currently, November is the cheapest month in which you can book a flight from Detroit to Harlingen (average of $128). Flying from Detroit to Harlingen in August is currently the most expensive (average of $318). 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.

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Top 3 airlines flying from Detroit to Harlingen

Discover the top 3 airlines that operate flights from Detroit to Harlingen. 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 April 23, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$128Average$412FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$259Average$379FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$288Average$365FlexibilityNo cancel feeOn-time69%

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