$133+ Cheap flights from Colorado to Harlingen (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 5/11. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — HRL
May 24 — May 311
Round-trip
1 adult, Economy
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Cheapest flights from Colorado to HarlingenExplore the most affordable flight options available from Colorado to Harlingen. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 24, 2026.
Explore the most affordable flight options available from Colorado to Harlingen. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 24, 2026.
This Southwest deal was found by Cheapflights users on 4/20. 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 6/95:45 am
DEN
- HRL
1 stop6h 45m
Southwest
Sat 6/1310:25 am
HRL
- DEN
1 stop4h 55m
Southwest
Deal found 4/20![Southwest logo]()
$204
This American Airlines deal was found by Cheapflights users on 4/20. 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 6/26:10 pm
DEN
- HRL
1 stop5h 04m
American Airlines
Tue 6/98:04 pm
HRL
- DEN
1 stop4h 51m
American Airlines
Deal found 4/20![American Airlines logo]()
$215
This Southwest deal was found by Cheapflights users on 4/20. 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 6/166:05 am
DEN
- HRL
1 stop5h 00m
Southwest
Sat 6/204:10 pm
HRL
- DEN
1 stop7h 25m
Southwest
Deal found 4/20![Southwest logo]()
$243
This Southwest deal was found by Cheapflights users on 4/20. 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 6/96:05 am
DEN
- HRL
2 stops6h 25m
Southwest
Tue 6/162:10 pm
HRL
- DEN
2 stops6h 30m
Southwest
Deal found 4/20![Southwest logo]()
$274
This Southwest deal was found by Cheapflights users on 4/20. 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 6/21:50 pm
DEN
- HRL
2 stops7h 10m
Southwest
Tue 6/92:10 pm
HRL
- DEN
1 stop5h 35m
Southwest
Deal found 4/20![Southwest logo]()
$285
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/712:15 pm
DEN
- HRL
1 stop4h 10m
Southwest
Mon 5/116:00 am
HRL
- DEN
1 stop5h 00m
Southwest
Deal found 4/22![Southwest logo]()
$295
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.
Thu 4/307:26 am
DEN
- HRL
1 stop5h 51m
American Airlines
Wed 5/68:03 pm
HRL
- DEN
1 stop4h 42m
American Airlines
Deal found 4/22![American Airlines logo]()
$301
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/611:00 am
DEN
- HRL
1 stop5h 20m
Southwest
Sun 5/106:00 am
HRL
- DEN
1 stop4h 50m
Southwest
Deal found 4/21![Southwest logo]()
$315
This Southwest deal was found by Cheapflights users on 4/20. 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 5/183:00 pm
DEN
- HRL
1 stop7h 00m
Southwest
Tue 5/266:20 am
HRL
- DEN
1 stop5h 05m
Southwest
Deal found 4/20![Southwest logo]()
$321
This Southwest deal was found by Cheapflights users on 4/20. 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 6/97:25 am
COS
- HRL
2 stops9h 35m
Southwest
Sat 6/135:05 am
HRL
- COS
1 stop5h 10m
Southwest
Deal found 4/20![Southwest logo]()
$358
This American Airlines deal was found by Cheapflights users on 4/19. 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.
Mon 5/41:39 pm
COS
- HRL
1 stop4h 43m
American Airlines
Fri 5/87:53 pm
HRL
- COS
1 stop4h 39m
American Airlines
Deal found 4/19![American Airlines logo]()
$362
This United Airlines deal was found by Cheapflights users on 4/19. 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.
Tue 10/277:30 am
COS
- HRL
1 stop7h 04m
United Airlines
Sat 10/315:15 am
HRL
- COS
1 stop6h 52m
United Airlines
Deal found 4/19![United Airlines logo]()
$364
Best flights from Colorado to HarlingenDiscover carefully curated flight deals from Colorado to Harlingen that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 24, 2026.
Discover carefully curated flight deals from Colorado to Harlingen that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 24, 2026.
This Southwest deal was found by Cheapflights users on 4/20. 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 6/166:05 am
DEN
- HRL
1 stop5h 00m
Southwest
Sat 6/204:10 pm
HRL
- DEN
1 stop7h 25m
Southwest
Deal found 4/20![Southwest logo]()
$243
This United Airlines deal was found by Cheapflights users on 4/19. 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.
Sat 5/91:30 pm
DEN
- HRL
1 stop5h 30m
United Airlines
Tue 5/127:00 am
HRL
- DEN
1 stop5h 36m
United Airlines
Deal found 4/19![United Airlines logo]()
$355
This American Airlines deal was found by Cheapflights users on 4/19. 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.
Mon 5/41:39 pm
COS
- HRL
1 stop4h 43m
American Airlines
Fri 5/87:53 pm
HRL
- COS
1 stop4h 39m
American Airlines
Deal found 4/19![American Airlines logo]()
$362
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/712:15 pm
DEN
- HRL
1 stop4h 10m
Southwest
Mon 5/116:00 am
HRL
- DEN
1 stop5h 00m
Southwest
Deal found 4/22![Southwest logo]()
$295
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/611:00 am
DEN
- HRL
1 stop5h 20m
Southwest
Sun 5/106:00 am
HRL
- DEN
1 stop4h 50m
Southwest
Deal found 4/21![Southwest logo]()
$315
This United Airlines deal was found by Cheapflights users on 4/18. 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.
Thu 9/101:25 pm
DEN
- HRL
1 stop7h 19m
United Airlines
Sun 9/135:15 am
HRL
- DEN
1 stop4h 40m
United Airlines
Deal found 4/18![United Airlines logo]()
$356
This Southwest deal was found by Cheapflights users on 4/20. 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 5/183:00 pm
DEN
- HRL
1 stop7h 00m
Southwest
Tue 5/2612:50 pm
HRL
- DEN
2 stops7h 40m
Southwest
Deal found 4/20![Southwest logo]()
$326
This United 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/211:15 pm
COS
- HRL
2 stops7h 37m
United Airlines
Sat 10/245:18 pm
HRL
- COS
2 stops7h 41m
United Airlines
Deal found 4/22![United Airlines logo]()
$380
This Southwest deal was found by Cheapflights users on 4/20. 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 7/245:00 am
DEN
- HRL
1 stop4h 00m
Southwest
Sun 7/265:40 am
HRL
- DEN
2 stops8h 10m
Southwest
Deal found 4/20![Southwest logo]()
$328
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/186:00 am
DEN
- HRL
2 stops7h 05m
Southwest
Sat 7/255:10 pm
HRL
- DEN
1 stop6h 55m
Southwest
Deal found 4/22![Southwest logo]()
$340
This United Airlines deal was found by Cheapflights users on 4/20. 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 6/91:49 pm
COS
- HRL
2 stops7h 05m
United Airlines
Sat 6/135:20 pm
HRL
- COS
1 stop5h 09m
United Airlines
Deal found 4/20![United Airlines logo]()
$442
This Southwest deal was found by Cheapflights users on 4/20. 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 6/97:25 am
COS
- HRL
2 stops9h 35m
Southwest
Sat 6/135:05 am
HRL
- COS
1 stop5h 10m
Southwest
Deal found 4/20![Southwest logo]()
$358
This Southwest deal was found by Cheapflights users on 4/18. 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.
Thu 9/108:05 am
DEN
- HRL
2 stops7h 00m
Southwest
Sun 9/136:00 am
HRL
- DEN
1 stop4h 55m
Southwest
Deal found 4/18![Southwest logo]()
$362
This Southwest deal was found by Cheapflights users on 4/20. 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 5/216:00 am
DEN
- HRL
1 stop4h 45m
Southwest
Sun 5/241:45 pm
HRL
- DEN
1 stop6h 50m
Southwest
Deal found 4/20![Southwest logo]()
$371
This United Airlines deal was found by Cheapflights users on 4/19. 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.
Mon 5/41:25 pm
COS
- HRL
2 stops7h 34m
United Airlines
Fri 5/87:00 am
HRL
- COS
2 stops8h 24m
United Airlines
Deal found 4/19![United Airlines logo]()
$558
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/145:00 am
COS
- HRL
1 stop10h 15m
Southwest
Sun 5/172:35 pm
HRL
- COS
2 stops8h 25m
Southwest
Deal found 4/23![Southwest logo]()
$450
Last-minute flights from Colorado to HarlingenDiscover last-minute flight deals from Colorado to Harlingen. Data last updated April 24, 2026 and is based on user searches.
Discover last-minute flight deals from Colorado to Harlingen. Data last updated April 24, 2026 and is based on user searches.
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.
Thu 4/231:13 pm
DEN
- HRL
1 stop5h 09m
American Airlines
Mon 4/272:47 pm
HRL
- DEN
1 stop6h 08m
American Airlines
Deal found 4/21![American Airlines logo]()
$337
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/2410:35 am
COS
- HRL
1 stop5h 50m
Southwest
Sun 5/36:00 am
HRL
- COS
2 stops6h 00m
Southwest
Deal found 4/22![Southwest logo]()
$539
This American Airlines deal was found by Cheapflights users on 4/20. 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.
Sat 4/256:23 am
DEN
- HRL
1 stop6h 54m
American Airlines
Mon 4/277:53 pm
HRL
- DEN
1 stop4h 52m
American Airlines
Deal found 4/20![American Airlines logo]()
$331
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.
Thu 4/307:26 am
DEN
- HRL
1 stop5h 51m
American Airlines
Wed 5/68:03 pm
HRL
- DEN
1 stop4h 42m
American Airlines
Deal found 4/22![American Airlines logo]()
$301
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/308:00 am
DEN
- HRL
1 stop7h 15m
Southwest
Wed 5/612:45 pm
HRL
- DEN
2 stops7h 45m
Southwest
Deal found 4/22![Southwest logo]()
$332
This American Airlines deal was found by Cheapflights users on 4/19. 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.
Mon 5/41:39 pm
COS
- HRL
1 stop4h 43m
American Airlines
Fri 5/87:53 pm
HRL
- COS
1 stop4h 39m
American Airlines
Deal found 4/19![American Airlines logo]()
$362
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/611:00 am
DEN
- HRL
1 stop5h 20m
Southwest
Sun 5/106:00 am
HRL
- DEN
1 stop4h 50m
Southwest
Deal found 4/21![Southwest logo]()
$315
This United Airlines deal was found by Cheapflights users on 4/20. 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.
Wed 5/63:35 pm
DEN
- HRL
1 stop5h 24m
United Airlines
Sat 5/95:18 pm
HRL
- DEN
1 stop5h 57m
United Airlines
Deal found 4/20![United Airlines logo]()
$355
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/712:15 pm
DEN
- HRL
1 stop4h 10m
Southwest
Mon 5/116:00 am
HRL
- DEN
1 stop5h 00m
Southwest
Deal found 4/22![Southwest logo]()
$295
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/145:00 am
COS
- HRL
1 stop10h 15m
Southwest
Sun 5/172:35 pm
HRL
- COS
2 stops8h 25m
Southwest
Deal found 4/23![Southwest logo]()
$450
This Southwest deal was found by Cheapflights users on 4/20. 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 5/183:00 pm
DEN
- HRL
1 stop7h 00m
Southwest
Tue 5/266:20 am
HRL
- DEN
1 stop5h 05m
Southwest
Deal found 4/20![Southwest logo]()
$321
This Southwest deal was found by Cheapflights users on 4/20. 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 5/211:45 pm
DEN
- HRL
2 stops8h 15m
Southwest
Sun 5/241:45 pm
HRL
- DEN
1 stop6h 50m
Southwest
Deal found 4/20![Southwest logo]()
$356
One-way flights from Colorado to HarlingenSearch for one-way flight options from Colorado to Harlingen. Find affordable one-way fares based on user searches. Data last updated April 24, 2026.
Search for one-way flight options from Colorado to Harlingen. Find affordable one-way fares based on user searches. Data last updated April 24, 2026.
This Southwest deal was found by Cheapflights users on 4/20. 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 5/113:00 pm
DEN
- HRL
1 stop7h 00m
Southwest
Deal found 4/20![Southwest logo]()
$133
This Delta deal was found by Cheapflights users on 4/19. 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.
Tue 4/286:30 am
DEN
- HRL
1 stop7h 35m
Delta
Deal found 4/19![Delta logo]()
$163
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 5/195:13 pm
COS
- HRL
1 stop4h 38m
American Airlines
Deal found 4/21![American Airlines logo]()
$195
This Southwest deal was found by Cheapflights users on 4/19. 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 5/81:45 pm
DEN
- HRL
2 stops8h 15m
Southwest
Deal found 4/19![Southwest logo]()
$200
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/196:30 am
COS
- HRL
2 stops8h 30m
Southwest
Deal found 4/21![Southwest logo]()
$221
This Southwest deal was found by Cheapflights users on 4/19. 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.
Tue 4/288:40 am
DEN
- HRL
2 stops6h 20m
Southwest
Deal found 4/19![Southwest logo]()
$222
This United 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/85:10 am
DEN
- HRL
1 stop5h 13m
United Airlines
Deal found 4/23![United Airlines logo]()
$285
Find flight deals from Colorado to Harlingen
Keep the following information in mind while searching for Colorado to Harlingen flight deals. Data was last updated April 24, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $204 (Southwest) |
One-way from | $133 (Southwest) |
Popular in | March |
Cheapest in | February |
Average price | $383 |
Good round-trip deal | $476 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Colorado 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 24, 2026.
Use the filters below to find and compare flights from Colorado to Harlingen that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
DenverHarlingen
DEN - HRL
DENHRL
Denver Intl
Tue 6/16
6:05 am-12:05 pm
1 stop5h 00m
Harlingen Valley Intl
Sat 6/20
4:10 pm-10:35 pm
1 stop7h 25m
$243
Quickest round-trip
DenverHarlingen
DEN - HRL
DENHRL
Denver Intl
Thu 5/7
12:15 pm-5:25 pm
1 stop4h 10m
Harlingen Valley Intl
Mon 5/11
6:00 am-10:00 am
1 stop5h 00m
$295
DenverHarlingen
DEN - HRL
DENHRL
Denver Intl
Wed 5/6
11:00 am-5:20 pm
1 stop5h 20m
Harlingen Valley Intl
Sun 5/10
6:00 am-9:50 am
1 stop4h 50m
$315
DenverHarlingen
DEN - HRL
DENHRL
Denver Intl
Mon 5/18
3:00 pm-11:00 pm
1 stop7h 00m
Harlingen Valley Intl
Tue 5/26
12:50 pm-7:30 pm
2 stops7h 40m
$326
DenverHarlingen
DEN - HRL
DENHRL
Denver Intl
Fri 7/24
5:00 am-10:00 am
1 stop4h 00m
Harlingen Valley Intl
Sun 7/26
5:40 am-12:50 pm
2 stops8h 10m
$328
DenverHarlingen
DEN - HRL
DENHRL
Denver Intl
Sat 7/18
6:00 am-2:05 pm
2 stops7h 05m
Harlingen Valley Intl
Sat 7/25
5:10 pm-11:05 pm
1 stop6h 55m
$340
DenverHarlingen
DEN - HRL
DENHRL
Denver Intl
Sat 5/9
1:30 pm-8:00 pm
1 stop5h 30m
Harlingen Valley Intl
Tue 5/12
7:00 am-11:36 am
1 stop5h 36m
$355
DenverHarlingen
DEN - HRL
DENHRL
Denver Intl
Thu 9/10
1:25 pm-9:44 pm
1 stop7h 19m
Harlingen Valley Intl
Sun 9/13
5:15 am-8:55 am
1 stop4h 40m
$356
Colorado SpringsHarlingen
COS - HRL
COSHRL
Colorado Springs
Tue 6/9
7:25 am-6:00 pm
2 stops9h 35m
Harlingen Valley Intl
Sat 6/13
5:05 am-9:15 am
1 stop5h 10m
$358
Colorado SpringsHarlingen
COS - HRL
COSHRL
Colorado Springs
Mon 5/4
1:39 pm-7:22 pm
1 stop4h 43m
Harlingen Valley Intl
Fri 5/8
7:53 pm-11:32 pm
1 stop4h 39m
$362
Showing 1-10 of 23 resultsSorted by cheapest first
Best time to book a flight from Colorado to Harlingen
Have a flexible travel schedule? Discover the best time to fly to Harlingen from Colorado with our price prediction graph.
DEN-HRL
COS-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.
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Everything you need to know about your flight from Colorado to Harlingen
USCO-HRL
DEN-HRL
COS-HRL
What is the cheapest month to book a flight from Colorado to Harlingen?
Currently, November is the cheapest month in which you can book a flight from Colorado to Harlingen (average of $181). Flying from Colorado to Harlingen in June is currently the most expensive (average of $296). 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.
How much does it cost to fly round-trip from Colorado to Harlingen?
Related info for your journey
Find useful and relevant information for your journey from Colorado 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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Alternative routes for Colorado to Harlingen
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Complete your trip
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Search flights from Colorado to Harlingen by cabin class
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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 April 24, 2026.
Colorado and Harlingen flights
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Colorado to Harlingen flights
Consider these flights traveling from Colorado to Harlingen.
Top 3 airlines flying from Colorado to Harlingen
Discover the top 3 airlines that operate flights from Colorado 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 24, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$199 | Average$323 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$232 | Average$370 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$266 | Average$386 | FlexibilityNo cancel fee | On-time69% |