United Flight 5598 Deals & Information (2026/2027)

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United Flight 5598 Route Deals From $142

The cheapest prices found with in the last 7 days for return flights were $288 and $142 for one-way flights to Denver Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Thu, May 28 - Tue, Jun 2
TUS
Tucson Intl.
DEN
Denver Intl.
$288 Roundtrip, found 2 days ago
$288
Roundtrip
found 2 days ago
Select United flight, departing Thu, May 28 from Tucson Intl. to Denver Intl., returning Tue, Jun 2, priced at $288 found 2 days ago
Wed, Jun 3 - Mon, Jun 8
TUS
Tucson Intl.
DEN
Denver Intl.
$301 Roundtrip, found 5 days ago
$301
Roundtrip
found 5 days ago
Select United flight, departing Wed, Jun 3 from Tucson Intl. to Denver Intl., returning Mon, Jun 8, priced at $301 found 5 days ago
Tue, Jun 23 - Mon, Jun 29
TUS
Tucson Intl.
DEN
Denver Intl.
$333 Roundtrip, found 1 day ago
$333
Roundtrip
found 1 day ago
Select United flight, departing Tue, Jun 23 from Tucson Intl. to Denver Intl., returning Mon, Jun 29, priced at $333 found 1 day ago
Wed, Jun 24 - Sat, Jun 27
TUS
Tucson Intl.
DEN
Denver Intl.
$334 Roundtrip, found 2 days ago
$334
Roundtrip
found 2 days ago
Select United flight, departing Wed, Jun 24 from Tucson Intl. to Denver Intl., returning Sat, Jun 27, priced at $334 found 2 days ago
Thu, Jun 11 - Tue, Jun 16
TUS
Tucson Intl.
DEN
Denver Intl.
$335 Roundtrip, found 1 day ago
$335
Roundtrip
found 1 day ago
Select United flight, departing Thu, Jun 11 from Tucson Intl. to Denver Intl., returning Tue, Jun 16, priced at $335 found 1 day ago
Tue, Jul 7 - Tue, Jul 14
TUS
Tucson Intl.
DEN
Denver Intl.
$338 Roundtrip, found 3 days ago
$338
Roundtrip
found 3 days ago
Select United flight, departing Tue, Jul 7 from Tucson Intl. to Denver Intl., returning Tue, Jul 14, priced at $338 found 3 days ago