$89+ Cheap flights from Denver to Harlingen, TX (DEN - 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 4/25. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — HRL
Mar 22 — Mar 291
1 adult, Economy
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1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
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Best
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Cheapest flights from Denver to HarlingenExplore the most affordable flight options available from Denver to Harlingen. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 20, 2026.
Explore the most affordable flight options available from Denver to Harlingen. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 20, 2026.
This Southwest deal was found by Cheapflights users on 2/17. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/2210:50 am
DEN
- HRL
1 stop4h 10m
Southwest
Tue 4/284:40 pm
HRL
- DEN
1 stop6h 55m
Southwest
Deal found 2/17![Southwest logo]()
$177
This Southwest deal was found by Cheapflights users on 2/16. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/81:10 pm
DEN
- HRL
1 stop6h 45m
Southwest
Sun 4/126:35 pm
HRL
- DEN
1 stop6h 45m
Southwest
Deal found 2/16![Southwest logo]()
$187
This Southwest deal was found by Cheapflights users on 2/16. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/76:50 am
DEN
- HRL
2 stops8h 10m
Southwest
Mon 4/1312:30 pm
HRL
- DEN
1 stop7h 10m
Southwest
Deal found 2/16![Southwest logo]()
$192
This Southwest deal was found by Cheapflights users on 2/18. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/36:00 am
DEN
- HRL
1 stop4h 45m
Southwest
Mon 4/66:50 am
HRL
- DEN
1 stop6h 55m
Southwest
Deal found 2/18![Southwest logo]()
$227
This American Airlines deal was found by Cheapflights users on 2/16. 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 4/76:25 am
DEN
- HRL
1 stop6h 52m
American Airlines
Mon 4/137:53 pm
HRL
- DEN
1 stop4h 52m
American Airlines
Deal found 2/16![American Airlines logo]()
$237
This American Airlines deal was found by Cheapflights users on 2/17. 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.
Wed 3/48:00 am
DEN
- HRL
1 stop5h 14m
American Airlines
Sun 3/88:06 pm
HRL
- DEN
1 stop4h 48m
American Airlines
Deal found 2/17![American Airlines logo]()
$241
This Southwest deal was found by Cheapflights users on 2/16. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/103:15 pm
DEN
- HRL
1 stop4h 15m
Southwest
Sun 4/126:35 pm
HRL
- DEN
1 stop6h 45m
Southwest
Deal found 2/16![Southwest logo]()
$243
This United Airlines deal was found by Cheapflights users on 2/19. 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.
Fri 3/65:00 am
DEN
- HRL
1 stop5h 16m
United Airlines
Tue 3/105:25 pm
HRL
- DEN
1 stop7h 19m
United Airlines
Deal found 2/19![United Airlines logo]()
$257
This Southwest deal was found by Cheapflights users on 2/17. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/175:35 am
DEN
- HRL
1 stop5h 30m
Southwest
Tue 3/247:00 am
HRL
- DEN
2 stops7h 55m
Southwest
Deal found 2/17![Southwest logo]()
$262
Best flights from Denver to HarlingenDiscover carefully curated flight deals from Denver to Harlingen that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated February 20, 2026.
Discover carefully curated flight deals from Denver to Harlingen that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated February 20, 2026.
This Southwest deal was found by Cheapflights users on 2/17. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/226:45 am
DEN
- HRL
1 stop4h 30m
Southwest
Tue 4/286:20 am
HRL
- DEN
2 stops6h 35m
Southwest
Deal found 2/17![Southwest logo]()
$182
This United Airlines deal was found by Cheapflights users on 2/18. 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 4/213:35 pm
DEN
- HRL
1 stop5h 24m
United Airlines
Fri 5/85:18 pm
HRL
- DEN
1 stop7h 40m
United Airlines
Deal found 2/18![United Airlines logo]()
$237
This Southwest deal was found by Cheapflights users on 2/16. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/81:10 pm
DEN
- HRL
1 stop6h 45m
Southwest
Sun 4/126:35 pm
HRL
- DEN
1 stop6h 45m
Southwest
Deal found 2/16![Southwest logo]()
$187
This Southwest deal was found by Cheapflights users on 2/16. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/76:50 am
DEN
- HRL
2 stops8h 10m
Southwest
Mon 4/1312:30 pm
HRL
- DEN
1 stop7h 10m
Southwest
Deal found 2/16![Southwest logo]()
$192
This United Airlines deal was found by Cheapflights users on 2/19. 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.
Fri 3/65:00 am
DEN
- HRL
1 stop5h 16m
United Airlines
Tue 3/105:25 pm
HRL
- DEN
1 stop7h 19m
United Airlines
Deal found 2/19![United Airlines logo]()
$257
This Southwest deal was found by Cheapflights users on 2/18. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/36:00 am
DEN
- HRL
1 stop4h 45m
Southwest
Mon 4/66:50 am
HRL
- DEN
1 stop6h 55m
Southwest
Deal found 2/18![Southwest logo]()
$227
This Southwest deal was found by Cheapflights users on 2/16. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/96:00 am
DEN
- HRL
1 stop4h 45m
Southwest
Sun 4/126:00 am
HRL
- DEN
2 stops6h 05m
Southwest
Deal found 2/16![Southwest logo]()
$267
Last-minute flights from Denver to HarlingenDiscover last-minute flight deals from Denver to Harlingen. Data last updated February 20, 2026 and is based on user searches.
Discover last-minute flight deals from Denver to Harlingen. Data last updated February 20, 2026 and is based on user searches.
This United Airlines deal was found by Cheapflights users on 2/17. 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 2/243:36 pm
DEN
- HRL
1 stop5h 23m
United Airlines
Wed 2/259:20 am
HRL
- DEN
1 stop6h 12m
United Airlines
Deal found 2/17![United Airlines logo]()
$285
This Southwest deal was found by Cheapflights users on 2/17. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/252:25 pm
DEN
- HRL
1 stop5h 25m
Southwest
Tue 3/36:30 am
HRL
- DEN
1 stop6h 45m
Southwest
Deal found 2/17![Southwest logo]()
$247
This Southwest deal was found by Cheapflights users on 2/16. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/266:00 am
DEN
- HRL
1 stop4h 30m
Southwest
Tue 3/36:30 am
HRL
- DEN
1 stop5h 10m
Southwest
Deal found 2/16![Southwest logo]()
$266
This American Airlines deal was found by Cheapflights users on 2/17. 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.
Wed 3/48:00 am
DEN
- HRL
1 stop5h 14m
American Airlines
Sun 3/88:06 pm
HRL
- DEN
1 stop4h 48m
American Airlines
Deal found 2/17![American Airlines logo]()
$241
This United Airlines deal was found by Cheapflights users on 2/19. 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.
Fri 3/65:00 am
DEN
- HRL
1 stop5h 16m
United Airlines
Tue 3/105:25 pm
HRL
- DEN
1 stop7h 19m
United Airlines
Deal found 2/19![United Airlines logo]()
$257
This Southwest deal was found by Cheapflights users on 2/16. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/87:00 am
DEN
- HRL
1 stop4h 15m
Southwest
Tue 3/105:05 pm
HRL
- DEN
2 stops6h 50m
Southwest
Deal found 2/16![Southwest logo]()
$287
This Southwest deal was found by Cheapflights users on 2/17. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/175:35 am
DEN
- HRL
1 stop5h 30m
Southwest
Tue 3/247:00 am
HRL
- DEN
2 stops7h 55m
Southwest
Deal found 2/17![Southwest logo]()
$262
This Southwest deal was found by Cheapflights users on 2/19. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/266:00 am
DEN
- HRL
1 stop4h 45m
Southwest
Sun 3/295:30 am
HRL
- DEN
2 stops6h 55m
Southwest
Deal found 2/19![Southwest logo]()
$288
This Southwest deal was found by Cheapflights users on 2/19. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/274:50 pm
DEN
- HRL
1 stop4h 20m
Southwest
Mon 3/305:30 pm
HRL
- DEN
1 stop6h 35m
Southwest
Deal found 2/19![Southwest logo]()
$267
One-way flights from Denver to HarlingenSearch for one-way flight options from Denver to Harlingen. Find affordable one-way fares based on user searches. Data last updated February 20, 2026.
Search for one-way flight options from Denver to Harlingen. Find affordable one-way fares based on user searches. Data last updated February 20, 2026.
This Southwest deal was found by Cheapflights users on 2/17. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/252:50 pm
DEN
- HRL
1 stop4h 05m
Southwest
Deal found 2/17![Southwest logo]()
$89
This American Airlines deal was found by Cheapflights users on 2/18. 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.
Mon 3/96:00 am
DEN
- HRL
1 stop7h 14m
American Airlines
Deal found 2/18![American Airlines logo]()
$139
This Southwest deal was found by Cheapflights users on 2/16. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/106:00 am
DEN
- HRL
1 stop4h 20m
Southwest
Deal found 2/16![Southwest logo]()
$155
This Delta deal was found by Cheapflights users on 2/19. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/267:10 am
DEN
- HRL
1 stop6h 29m
Delta
Deal found 2/19![Delta logo]()
$180
This Southwest deal was found by Cheapflights users on 2/18. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/912:00 pm
DEN
- HRL
2 stops9h 10m
Southwest
Deal found 2/18![Southwest logo]()
$190
This United Airlines deal was found by Cheapflights users on 2/19. 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 3/195:00 am
DEN
- HRL
1 stop5h 16m
United Airlines
Deal found 2/19![United Airlines logo]()
$200
This American Airlines deal was found by Cheapflights users on 2/19. 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.
Sun 3/156:00 am
DEN
- HRL
1 stop7h 14m
American Airlines
Deal found 2/19![American Airlines logo]()
$210
This American Airlines deal was found by Cheapflights users on 2/17. 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 2/262:49 pm
DEN
- HRL
1 stop7h 04m
American Airlines
Deal found 2/17![American Airlines logo]()
$220
This Booking.com deal was found by Cheapflights users on 2/17. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/228:00 am
DEN
- HRL
1 stop10h 06m
Sun Country Air
Deal found 2/17![Sun Country Air logo]()
$283
This Southwest deal was found by Cheapflights users on 2/19. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/154:30 pm
DEN
- HRL
2 stops6h 35m
Southwest
Deal found 2/19![Southwest logo]()
$302
Find flight deals from Denver to Harlingen
Discover tips and strategies to find the most affordable flight options for your journey from Denver (DEN) 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 February 20, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $177 (Southwest) |
One-way from | $89 (Southwest) |
Popular in | April |
Cheapest in | February |
Average price | $252 |
Cheapflights Fare Finder
Customize your flight search to find flights from Denver 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 February 20, 2026.
Use the filters below to find and compare flights from Denver to Harlingen that are best for you.
Fly from
Denver
Fly to
Harlingen
Route
Depart
Return
Price
DenverHarlingen
DEN - HRL
DENHRL
Denver Intl
Wed 4/22
6:45 am-12:15 pm
1 stop4h 30m
Harlingen Valley Intl
Tue 4/28
6:20 am-11:55 am
2 stops6h 35m
$182
DenverHarlingen
DEN - HRL
DENHRL
Denver Intl
Wed 4/8
1:10 pm-8:55 pm
1 stop6h 45m
Harlingen Valley Intl
Sun 4/12
6:35 pm-12:20 am
1 stop6h 45m
$187
DenverHarlingen
DEN - HRL
DENHRL
Denver Intl
Tue 4/7
6:50 am-4:00 pm
2 stops8h 10m
Harlingen Valley Intl
Mon 4/13
12:30 pm-6:40 pm
1 stop7h 10m
$192
DenverHarlingen
DEN - HRL
DENHRL
Denver Intl
Fri 4/3
6:00 am-11:45 am
1 stop4h 45m
Harlingen Valley Intl
Mon 4/6
6:50 am-12:45 pm
1 stop6h 55m
$227
DenverHarlingen
DEN - HRL
DENHRL
Denver Intl
Tue 4/21
3:35 pm-9:59 pm
1 stop5h 24m
Harlingen Valley Intl
Fri 5/8
5:18 pm-11:58 pm
1 stop7h 40m
$237
DenverHarlingen
DEN - HRL
DENHRL
Denver Intl
Fri 3/6
5:00 am-11:16 am
1 stop5h 16m
Harlingen Valley Intl
Tue 3/10
5:25 pm-11:44 pm
1 stop7h 19m
$257
DenverHarlingen
DEN - HRL
DENHRL
Denver Intl
Thu 4/9
6:00 am-11:45 am
1 stop4h 45m
Harlingen Valley Intl
Sun 4/12
6:00 am-11:05 am
2 stops6h 05m
$267
DenverHarlingen
DEN - HRL
DENHRL
Denver Intl
Sat 4/25
2:50 pm-7:55 pm
1 stop4h 05m
$89
DenverHarlingen
DEN - HRL
DENHRL
Denver Intl
Mon 3/9
6:00 am-2:14 pm
1 stop7h 14m
$139
DenverHarlingen
DEN - HRL
DENHRL
Denver Intl
Sun 5/10
6:00 am-11:20 am
1 stop4h 20m
$155
Showing 1-10 of 16 results
Compare providers for flights from Denver 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 Denver to Harlingen in February.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Denver-Harlingen, Texas flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Denver-Harlingen, Texas flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Denver-Harlingen, Texas flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Denver-Harlingen, Texas 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 Denver-Harlingen, Texas 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 Denver to Harlingen
Have a flexible travel schedule? Discover the best time to fly to Harlingen from Denver with our price prediction graph.
DEN-HRL
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 Denver to Harlingen
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 February 20, 2026.
Read through reviews of airlines operating flights from Denver to Harlingen, such as Southwest and American Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Overall
8.0
Food
7.0
Boarding
8.1
Entertainment
7.5
Crew
8.6
Comfort
8.0
Reviews
1 / 20
2.0
MediocreMike,Aug 2025
OKC - AUS
Overall
8.0
Food
7.0
Boarding
8.1
Entertainment
7.5
Crew
8.6
Comfort
8.0
Reviews
1 / 20
2.0
MediocreMike,Aug 2025
OKC - AUS
Overall
8.0
Food
7.0
Boarding
8.1
Entertainment
7.5
Crew
8.6
Comfort
8.0
Reviews
1 / 20
2.0
MediocreMike,Aug 2025
OKC - AUS
Related info for your journey
Find useful and relevant information for your journey from Denver to Harlingen. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Complete your trip
Complete your trip to Harlingen by adding a car rental and/or hotel reservation to your travel itinerary.
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Find flights from Denver to Harlingen, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Other flights to Harlingen
Explore flights to Harlingen departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on February 20, 2026.
Denver and Harlingen flights
Browse other Denver and Harlingen flight options. Last updated on February 20, 2026.
Other flights from Denver
Browse through other flights departing from Denver. Flights are based on user searches made on Cheapflights and were last updated on February 20, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top 2 airlines flying from Denver to Harlingen
Discover the top 2 airlines that operate flights from Denver 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 February 20, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$199 | Average$309 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$238 | Average$360 | FlexibilityNo cancel fee | On-time71% |