United Flight 5881 Deals & Information (2025/2026)

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United Flight 5881 Route Deals From $214

The cheapest prices found with in the last 7 days for return flights were $193 and $214 for one-way flights to Denver Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Sat, Sep 20 - Sun, Sep 21
IDA
Idaho Falls Regional
DEN
Denver Intl.
$193 Roundtrip, found 6 days ago
$193
Roundtrip
found 6 days ago
Select United flight, departing Sat, Sep 20 from Idaho Falls Regional to Denver Intl., returning Sun, Sep 21, priced at $193 found 6 days ago
Thu, Oct 2 - Mon, Oct 6
IDA
Idaho Falls Regional
DEN
Denver Intl.
$198 Roundtrip, just found
$198
Roundtrip
just found
Select United flight, departing Thu, Oct 2 from Idaho Falls Regional to Denver Intl., returning Mon, Oct 6, priced at $198 just found
Thu, Oct 2 - Mon, Oct 6
IDA
Idaho Falls Regional
DEN
Denver Intl.
$204 Roundtrip, just found
$204
Roundtrip
just found
Select United flight, departing Thu, Oct 2 from Idaho Falls Regional to Denver Intl., returning Mon, Oct 6, priced at $204 just found
Wed, Oct 1 - Sun, Oct 5
IDA
Idaho Falls Regional
DEN
Denver Intl.
$219 Roundtrip, just found
$219
Roundtrip
just found
Select United flight, departing Wed, Oct 1 from Idaho Falls Regional to Denver Intl., returning Sun, Oct 5, priced at $219 just found
Thu, Oct 2 - Sun, Oct 5
IDA
Idaho Falls Regional
DEN
Denver Intl.
$224 Roundtrip, found 1 day ago
$224
Roundtrip
found 1 day ago
Select United flight, departing Thu, Oct 2 from Idaho Falls Regional to Denver Intl., returning Sun, Oct 5, priced at $224 found 1 day ago
Sat, Aug 30 - Mon, Sep 1
IDA
Idaho Falls Regional
DEN
Denver Intl.
$228 Roundtrip, found 2 days ago
$228
Roundtrip
found 2 days ago
Select United flight, departing Sat, Aug 30 from Idaho Falls Regional to Denver Intl., returning Mon, Sep 1, priced at $228 found 2 days ago
Thu, Oct 2 - Mon, Oct 6
IDA
Idaho Falls Regional
DEN
Denver Intl.
$229 Roundtrip, just found
$229
Roundtrip
just found
Select United flight, departing Thu, Oct 2 from Idaho Falls Regional to Denver Intl., returning Mon, Oct 6, priced at $229 just found
Wed, Oct 1 - Sun, Oct 5
IDA
Idaho Falls Regional
DEN
Denver Intl.
$249 Roundtrip, just found
$249
Roundtrip
just found
Select United flight, departing Wed, Oct 1 from Idaho Falls Regional to Denver Intl., returning Sun, Oct 5, priced at $249 just found
Sat, Aug 23 - Sun, Aug 24
IDA
Idaho Falls Regional
DEN
Denver Intl.
$252 Roundtrip, found 2 days ago
$252
Roundtrip
found 2 days ago
Select United flight, departing Sat, Aug 23 from Idaho Falls Regional to Denver Intl., returning Sun, Aug 24, priced at $252 found 2 days ago
Sat, Aug 30 - Mon, Sep 1
IDA
Idaho Falls Regional
DEN
Denver Intl.
$254 Roundtrip, found 2 days ago
$254
Roundtrip
found 2 days ago
Select United flight, departing Sat, Aug 30 from Idaho Falls Regional to Denver Intl., returning Mon, Sep 1, priced at $254 found 2 days ago
Wed, Oct 1 - Sun, Oct 5
IDA
Idaho Falls Regional
DEN
Denver Intl.
$259 Roundtrip, just found
$259
Roundtrip
just found
Select United flight, departing Wed, Oct 1 from Idaho Falls Regional to Denver Intl., returning Sun, Oct 5, priced at $259 just found
Wed, Oct 1 - Sun, Oct 5
IDA
Idaho Falls Regional
DEN
Denver Intl.
$264 Roundtrip, just found
$264
Roundtrip
just found
Select United flight, departing Wed, Oct 1 from Idaho Falls Regional to Denver Intl., returning Sun, Oct 5, priced at $264 just found
Sat, Aug 30 - Mon, Sep 1
IDA
Idaho Falls Regional
DEN
Denver Intl.
$269 Roundtrip, found 2 days ago
$269
Roundtrip
found 2 days ago
Select United flight, departing Sat, Aug 30 from Idaho Falls Regional to Denver Intl., returning Mon, Sep 1, priced at $269 found 2 days ago
Thu, Oct 2 - Mon, Oct 6
IDA
Idaho Falls Regional
DEN
Denver Intl.
$270 Roundtrip, just found
$270
Roundtrip
just found
Select United flight, departing Thu, Oct 2 from Idaho Falls Regional to Denver Intl., returning Mon, Oct 6, priced at $270 just found