Cheap Flights to Costilla County from $99

View $99 flight on Tue, Jun 9, 2026Opens in a new window

Popular airlines to Costilla County

  • Denver Air Connection

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How much is the cheapest flight to Costilla County?

Prices were available within the past 7 days and start at $99 for one-way flights and $193 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

KEY LIME AIR DBA DENVER AIR CONNECTION
Mon, Mar 23 - Fri, Mar 27
DEN
Denver
ALS
Alamosa
$198 Roundtrip, found 1 hour ago
$198
Roundtrip
found 1 hour ago
Select KEY LIME AIR DBA DENVER AIR CONNECTION flight, departing Mon, Mar 23 from Denver to Alamosa, returning Fri, Mar 27, priced at $198 found 1 hour ago
KEY LIME AIR DBA DENVER AIR CONNECTION
Fri, Jun 26 - Mon, Jun 29
DEN
Denver
ALS
Alamosa
$203 Roundtrip, found 2 hours ago
$203
Roundtrip
found 2 hours ago
Select KEY LIME AIR DBA DENVER AIR CONNECTION flight, departing Fri, Jun 26 from Denver to Alamosa, returning Mon, Jun 29, priced at $203 found 2 hours ago
KEY LIME AIR DBA DENVER AIR CONNECTION
Sun, Mar 15 - Sat, Mar 21
DEN
Denver
ALS
Alamosa
$214 Roundtrip, found 17 hours ago
$214
Roundtrip
found 17 hours ago
Select KEY LIME AIR DBA DENVER AIR CONNECTION flight, departing Sun, Mar 15 from Denver to Alamosa, returning Sat, Mar 21, priced at $214 found 17 hours ago
KEY LIME AIR DBA DENVER AIR CONNECTION
Fri, Feb 27 - Sun, Mar 22
DEN
Denver
ALS
Alamosa
$218 Roundtrip, found 1 hour ago
$218
Roundtrip
found 1 hour ago
Select KEY LIME AIR DBA DENVER AIR CONNECTION flight, departing Fri, Feb 27 from Denver to Alamosa, returning Sun, Mar 22, priced at $218 found 1 hour ago
KEY LIME AIR DBA DENVER AIR CONNECTION
Fri, Mar 13 - Tue, Mar 17
DEN
Denver
ALS
Alamosa
$228 Roundtrip, just found
$228
Roundtrip
just found
Select KEY LIME AIR DBA DENVER AIR CONNECTION flight, departing Fri, Mar 13 from Denver to Alamosa, returning Tue, Mar 17, priced at $228 just found
KEY LIME AIR DBA DENVER AIR CONNECTION
Sun, Mar 8 - Sun, Mar 15
DEN
Denver
ALS
Alamosa
$233 Roundtrip, found 21 hours ago
$233
Roundtrip
found 21 hours ago
Select KEY LIME AIR DBA DENVER AIR CONNECTION flight, departing Sun, Mar 8 from Denver to Alamosa, returning Sun, Mar 15, priced at $233 found 21 hours ago
KEY LIME AIR DBA DENVER AIR CONNECTION
Sat, Feb 28 - Sun, Mar 1
DEN
Denver
ALS
Alamosa
$238 Roundtrip, found 23 hours ago
$238
Roundtrip
found 23 hours ago
Select KEY LIME AIR DBA DENVER AIR CONNECTION flight, departing Sat, Feb 28 from Denver to Alamosa, returning Sun, Mar 1, priced at $238 found 23 hours ago
Delta
Tue, May 19 - Wed, May 20
SLC
Salt Lake City
ALS
Alamosa
$362 Roundtrip, found 1 day ago
$362
Roundtrip
found 1 day ago
Select Delta flight, departing Tue, May 19 from Salt Lake City to Alamosa, returning Wed, May 20, priced at $362 found 1 day ago
American Airlines
Mon, Mar 30 - Fri, Apr 3
CLD
Carlsbad
ALS
Alamosa
$383 Roundtrip, found 1 day ago
$383
Roundtrip
found 1 day ago
Select American Airlines flight, departing Mon, Mar 30 from Carlsbad to Alamosa, returning Fri, Apr 3, priced at $383 found 1 day ago
United
Fri, May 8 - Tue, May 12
DFW
Dallas
ALS
Alamosa
$399 Roundtrip, found 1 day ago
$399
Roundtrip
found 1 day ago
Select United flight, departing Fri, May 8 from Dallas to Alamosa, returning Tue, May 12, priced at $399 found 1 day ago

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Trending flights to Costilla County

These prices were available within the past 7 days. Prices quoted are per person, round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

KEY LIME AIR DBA DENVER AIR CONNECTION
Sun, Apr 19 - Sun, Apr 19
DEN
Denver
ALS
Alamosa
$193 Roundtrip, found 8 hours ago
$193
Roundtrip
found 8 hours ago
Select KEY LIME AIR DBA DENVER AIR CONNECTION flight, departing Sun, Apr 19 from Denver to Alamosa, returning Sun, Apr 19, priced at $193 found 8 hours ago

Frequently asked questions

How do I find cheap flights to Costilla County that have flexible change policies?
At Expedia, we've been channeling our inner acrobat to provide you with the most flexible airfares around town. Just click on "No change fee" under the "Flexible change policies" subheading to find your ideal flight to Costilla County.
Which airlines fly to Costilla County?
With a good selection of airlines offering flights into or near Costilla County, you have plenty of options:

  • United Airlines - 390 flights to or near Costilla County each month, including 390 flights to Colorado Springs Airport (COS) per month.
  • Southwest Airlines - 264 flights to or near Costilla County each month, including 264 flights to Colorado Springs Airport (COS) per month.
  • American Airlines - 151 flights to or near Costilla County each month, including 151 flights to Colorado Springs Airport (COS) per month.

How can I find cheap tickets to Costilla County?
An useful strategy for getting your hands on cheap tickets is to be flexible with your dates. Begin with searching for your flight to Costilla County, then click on the "flexible dates" box to compare prices for nearby days. Another useful tip? Book well in advance. For an idea of costs, $193 was the lowest price for a flight to Costilla County in the last seven days.
How much is a flight to Costilla County?
In the last seven days, round-trip tickets to Costilla County sold for as little as $193 and reached a maximum of $399. For one-way journeys departing from Denver (DEN), the lowest amount paid during this time was $99.
What are the most popular airports to fly into in Costilla County?
The main gateway to Costilla County, roughly 889 flights land at Colorado Springs Airport (COS) every month. Look for a rewarding deal, lock in your fare and prepare to experience this sensational region.
When is the cheapest time to fly to Costilla County?
Consider traveling earlier in the week to bag the best airfare to Costilla County. Tuesday is usually the cheapest day to take off, with Monday a close second. Saturday typically has the most expensive prices. This is because a lot of people prefer to begin their getaway on a weekend.
How much is a plane ticket to Costilla County?
Plane fares varied from $193 to $399 over the last seven days. When you're ready to book, we're here to help grab the best price to Costilla County.
What months are the cheapest to book a flight to Costilla County?
To secure a fabulous deal to Costilla County, book during February when the price of airfares are at their lowest. The most expensive time to book? In the United States, it's the month of December.
How long is a flight to Costilla County?
Whether or not you'll have time for a movie marathon depends on where you're traveling from. To give you a rough idea, here are the average flight times for three well-known domestic routes to Costilla County:

  • Denver, CO (DEN-Denver Intl.) to Colorado Springs Airport (COS) - 49 minutes
  • Dallas, TX (DFW-Dallas-Fort Worth Intl.) to Colorado Springs Airport (COS) - 2 hours
  • Houston, TX (IAH-George Bush Intercontinental) to Colorado Springs Airport (COS) - 2 hours and 33 minutes

What is the best time to go to Costilla County?
If you'd love to experience Costilla County's most populous city when it's buzzing with activity, set off for San Luis sometime during May, June and July. Like most locations in the Northern Hemisphere, summer here begins June 20, with average temperatures of between 50ºF and 75ºF.

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