United Flight UA5688 Deals & Information (2025/2026)

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United Flight 5688 Route Deals From $224

The cheapest prices found with in the last 7 days for return flights were $209 and $224 for one-way flights to Tucson Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Mon, Sep 22 - Mon, Sep 29
SFO
San Francisco Intl.
TUS
Tucson Intl.
$209 Roundtrip, found 6 hours ago
$209
Roundtrip
found 6 hours ago
Select United flight, departing Mon, Sep 22 from San Francisco Intl. to Tucson Intl., returning Mon, Sep 29, priced at $209 found 6 hours ago
Sat, Aug 23 - Sun, Aug 24
SFO
San Francisco Intl.
TUS
Tucson Intl.
$211 Roundtrip, found 1 day ago
$211
Roundtrip
found 1 day ago
Select United flight, departing Sat, Aug 23 from San Francisco Intl. to Tucson Intl., returning Sun, Aug 24, priced at $211 found 1 day ago
Mon, Sep 22 - Mon, Sep 29
SFO
San Francisco Intl.
TUS
Tucson Intl.
$219 Roundtrip, found 6 hours ago
$219
Roundtrip
found 6 hours ago
Select United flight, departing Mon, Sep 22 from San Francisco Intl. to Tucson Intl., returning Mon, Sep 29, priced at $219 found 6 hours ago
Sat, Aug 23 - Sun, Aug 24
SFO
San Francisco Intl.
TUS
Tucson Intl.
$221 Roundtrip, found 1 day ago
$221
Roundtrip
found 1 day ago
Select United flight, departing Sat, Aug 23 from San Francisco Intl. to Tucson Intl., returning Sun, Aug 24, priced at $221 found 1 day ago
Wed, Jul 30 - Sat, Aug 2
SFO
San Francisco Intl.
TUS
Tucson Intl.
$229 Roundtrip, found 2 days ago
$229
Roundtrip
found 2 days ago
Select United flight, departing Wed, Jul 30 from San Francisco Intl. to Tucson Intl., returning Sat, Aug 2, priced at $229 found 2 days ago

Frequently asked questions

What route does flight number UA5688 take?
UA5688 takes approximately 2 hours and 2 minutes to fly non-stop from Denver, CO Airport (DEN-Denver Intl.) to Boise, ID Airport (BOI). We all know there's magic in the destination, but the journey is always half the fun!
How often is UA5688 on time?
For passengers traveling on United Airlines flight number UA5688 between DIA airport and Boise Airport, 86% of these trips touch down on time. If your plane is delayed, expect a wait time of about 10 minutes on average. Thanks to this air carrier's high standards, this service has a 3.85-star rating.
What kind of plane is on flight number UA5688?
Expect to step aboard an Embraer 175 if you're taking off on flight UA5688. Most flights from DEN to Boise Airport (BOI) operate using this kind of aircraft.
If I am not able to travel due to COVID-19, can I change my flight to a later date?
For more info about changing your UA5688 flight with Travelocity, please visit our Customer Service Portal.