United Flight UA5566 Deals & Information (2025/2026)

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United Flight 5566 Route Deals From $204

The cheapest prices found with in the last 7 days for return flights were $179 and $204 for one-way flights to Sacramento Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Thu, Dec 18 - Fri, Jan 9
SFO
San Francisco Intl.
SMF
Sacramento Intl.
$179 Roundtrip, found 1 day ago
$179
Roundtrip
found 1 day ago
Select United flight, departing Thu, Dec 18 from San Francisco Intl. to Sacramento Intl., returning Fri, Jan 9, priced at $179 found 1 day ago
Thu, Dec 18 - Fri, Jan 9
SFO
San Francisco Intl.
SMF
Sacramento Intl.
$218 Roundtrip, found 1 day ago
$218
Roundtrip
found 1 day ago
Select United flight, departing Thu, Dec 18 from San Francisco Intl. to Sacramento Intl., returning Fri, Jan 9, priced at $218 found 1 day ago
Thu, Dec 18 - Fri, Jan 9
SFO
San Francisco Intl.
SMF
Sacramento Intl.
$239 Roundtrip, found 1 day ago
$239
Roundtrip
found 1 day ago
Select United flight, departing Thu, Dec 18 from San Francisco Intl. to Sacramento Intl., returning Fri, Jan 9, priced at $239 found 1 day ago
Thu, Jun 19 - Tue, Jun 24
SFO
San Francisco Intl.
SMF
Sacramento Intl.
$249 Roundtrip, found 3 days ago
$249
Roundtrip
found 3 days ago
Select United flight, departing Thu, Jun 19 from San Francisco Intl. to Sacramento Intl., returning Tue, Jun 24, priced at $249 found 3 days ago
Thu, Dec 18 - Fri, Jan 9
SFO
San Francisco Intl.
SMF
Sacramento Intl.
$278 Roundtrip, found 1 day ago
$278
Roundtrip
found 1 day ago
Select United flight, departing Thu, Dec 18 from San Francisco Intl. to Sacramento Intl., returning Fri, Jan 9, priced at $278 found 1 day ago

Frequently asked questions

What route does flight number UA5566 take?
UA5566 flies directly from DFW Airport to San Francisco Airport in around 3 hours and 52 minutes. It can sometimes take other routes though, some of which may be multi-stop journeys. Keep this in mind when booking your seat to avoid any confusion.
What terminal does UA5566 fly out of?
Terminal E is the terminal you'll likely depart from if you're booked on a flight out of DFW. Dallas-Fort Worth Intl. Airport (DFW) to SFO is the most commonly traveled route for flight number UA5566.
What kind of plane is on flight number UA5566?
If you've booked a seat on flight UA5566 from Dallas-Fort Worth Intl. Airport (DFW) to SFO, there's every chance you'll be on board the Embraer 175. Flight UA5566 serves many routes, but this is the busiest.
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 UA5566 flight with Travelocity, please visit our Customer Service Portal.