United Flight 2155 Deals & Information (2026/2027)

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United Flight 2155 Route Deals From $251

The cheapest prices found with in the last 7 days for return flights were $254 and $251 for one-way flights to Denver Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Fri, May 15 - Sun, May 17
IDA
Idaho Falls Regional
DEN
Denver Intl.
$254 Roundtrip, found 1 hour ago
$254
Roundtrip
found 1 hour ago
Select United flight, departing Fri, May 15 from Idaho Falls Regional to Denver Intl., returning Sun, May 17, priced at $254 found 1 hour ago
Thu, Sep 10 - Wed, Sep 16
IDA
Idaho Falls Regional
DEN
Denver Intl.
$262 Roundtrip, found 4 days ago
$262
Roundtrip
found 4 days ago
Select United flight, departing Thu, Sep 10 from Idaho Falls Regional to Denver Intl., returning Wed, Sep 16, priced at $262 found 4 days ago
Thu, May 14 - Sun, May 17
IDA
Idaho Falls Regional
DEN
Denver Intl.
$269 Roundtrip, found 4 days ago
$269
Roundtrip
found 4 days ago
Select United flight, departing Thu, May 14 from Idaho Falls Regional to Denver Intl., returning Sun, May 17, priced at $269 found 4 days ago
Tue, Sep 8 - Sun, Sep 13
IDA
Idaho Falls Regional
DEN
Denver Intl.
$271 Roundtrip, found 4 days ago
$271
Roundtrip
found 4 days ago
Select United flight, departing Tue, Sep 8 from Idaho Falls Regional to Denver Intl., returning Sun, Sep 13, priced at $271 found 4 days ago
Thu, Apr 30 - Thu, May 7
IDA
Idaho Falls Regional
DEN
Denver Intl.
$274 Roundtrip, found 4 days ago
$274
Roundtrip
found 4 days ago
Select United flight, departing Thu, Apr 30 from Idaho Falls Regional to Denver Intl., returning Thu, May 7, priced at $274 found 4 days ago
Thu, Sep 10 - Wed, Sep 16
IDA
Idaho Falls Regional
DEN
Denver Intl.
$277 Roundtrip, found 4 days ago
$277
Roundtrip
found 4 days ago
Select United flight, departing Thu, Sep 10 from Idaho Falls Regional to Denver Intl., returning Wed, Sep 16, priced at $277 found 4 days ago
Tue, Sep 8 - Sun, Sep 13
IDA
Idaho Falls Regional
DEN
Denver Intl.
$283 Roundtrip, found 4 days ago
$283
Roundtrip
found 4 days ago
Select United flight, departing Tue, Sep 8 from Idaho Falls Regional to Denver Intl., returning Sun, Sep 13, priced at $283 found 4 days ago
Sat, Jul 4 - Mon, Jul 6
IDA
Idaho Falls Regional
DEN
Denver Intl.
$288 Roundtrip, found 18 hours ago
$288
Roundtrip
found 18 hours ago
Select United flight, departing Sat, Jul 4 from Idaho Falls Regional to Denver Intl., returning Mon, Jul 6, priced at $288 found 18 hours ago
Thu, May 14 - Sun, May 17
IDA
Idaho Falls Regional
DEN
Denver Intl.
$289 Roundtrip, found 4 days ago
$289
Roundtrip
found 4 days ago
Select United flight, departing Thu, May 14 from Idaho Falls Regional to Denver Intl., returning Sun, May 17, priced at $289 found 4 days ago
Tue, Sep 8 - Sun, Sep 13
IDA
Idaho Falls Regional
DEN
Denver Intl.
$291 Roundtrip, found 4 days ago
$291
Roundtrip
found 4 days ago
Select United flight, departing Tue, Sep 8 from Idaho Falls Regional to Denver Intl., returning Sun, Sep 13, priced at $291 found 4 days ago
Thu, Jun 4 - Mon, Jun 8
IDA
Idaho Falls Regional
DEN
Denver Intl.
$296 Roundtrip, found 4 days ago
$296
Roundtrip
found 4 days ago
Select United flight, departing Thu, Jun 4 from Idaho Falls Regional to Denver Intl., returning Mon, Jun 8, priced at $296 found 4 days ago
Sat, Jul 4 - Mon, Jul 6
IDA
Idaho Falls Regional
DEN
Denver Intl.
$301 Roundtrip, found 18 hours ago
$301
Roundtrip
found 18 hours ago
Select United flight, departing Sat, Jul 4 from Idaho Falls Regional to Denver Intl., returning Mon, Jul 6, priced at $301 found 18 hours ago
Tue, Aug 25 - Sun, Aug 30
IDA
Idaho Falls Regional
DEN
Denver Intl.
$314 Roundtrip, found 4 days ago
$314
Roundtrip
found 4 days ago
Select United flight, departing Tue, Aug 25 from Idaho Falls Regional to Denver Intl., returning Sun, Aug 30, priced at $314 found 4 days ago
Tue, Aug 25 - Sun, Aug 30
IDA
Idaho Falls Regional
DEN
Denver Intl.
$315 Roundtrip, found 4 days ago
$315
Roundtrip
found 4 days ago
Select United flight, departing Tue, Aug 25 from Idaho Falls Regional to Denver Intl., returning Sun, Aug 30, priced at $315 found 4 days ago
Thu, Jun 4 - Mon, Jun 8
IDA
Idaho Falls Regional
DEN
Denver Intl.
$316 Roundtrip, found 4 days ago
$316
Roundtrip
found 4 days ago
Select United flight, departing Thu, Jun 4 from Idaho Falls Regional to Denver Intl., returning Mon, Jun 8, priced at $316 found 4 days ago
Tue, Sep 8 - Sun, Sep 13
IDA
Idaho Falls Regional
DEN
Denver Intl.
$321 Roundtrip, found 4 days ago
$321
Roundtrip
found 4 days ago
Select United flight, departing Tue, Sep 8 from Idaho Falls Regional to Denver Intl., returning Sun, Sep 13, priced at $321 found 4 days ago
Tue, Sep 8 - Sun, Sep 13
IDA
Idaho Falls Regional
DEN
Denver Intl.
$322 Roundtrip, found 4 days ago
$322
Roundtrip
found 4 days ago
Select United flight, departing Tue, Sep 8 from Idaho Falls Regional to Denver Intl., returning Sun, Sep 13, priced at $322 found 4 days ago
Fri, May 15 - Sun, May 17
IDA
Idaho Falls Regional
DEN
Denver Intl.
$325 Roundtrip, found 1 hour ago
$325
Roundtrip
found 1 hour ago
Select United flight, departing Fri, May 15 from Idaho Falls Regional to Denver Intl., returning Sun, May 17, priced at $325 found 1 hour ago
Thu, Sep 10 - Wed, Sep 16
IDA
Idaho Falls Regional
DEN
Denver Intl.
$327 Roundtrip, found 4 days ago
$327
Roundtrip
found 4 days ago
Select United flight, departing Thu, Sep 10 from Idaho Falls Regional to Denver Intl., returning Wed, Sep 16, priced at $327 found 4 days ago