United Flight 4781 Deals & Information (2025/2026)

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United Flight 4781 Route Deals From $39

The cheapest prices found with in the last 7 days for return flights were $77 and $39 for one-way flights to San Francisco Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Wed, Sep 3 - Thu, Sep 4
PDX
Portland Intl.
SFO
San Francisco Intl.
$77 Roundtrip, just found
$77
Roundtrip
just found
Select United flight, departing Wed, Sep 3 from Portland Intl. to San Francisco Intl., returning Thu, Sep 4, priced at $77 just found
Sat, Oct 18 - Wed, Oct 22
PDX
Portland Intl.
SFO
San Francisco Intl.
$94 Roundtrip, found 5 days ago
$94
Roundtrip
found 5 days ago
Select United flight, departing Sat, Oct 18 from Portland Intl. to San Francisco Intl., returning Wed, Oct 22, priced at $94 found 5 days ago
Wed, Sep 24 - Sat, Sep 27
PDX
Portland Intl.
SFO
San Francisco Intl.
$107 Roundtrip, found 19 hours ago
$107
Roundtrip
found 19 hours ago
Select United flight, departing Wed, Sep 24 from Portland Intl. to San Francisco Intl., returning Sat, Sep 27, priced at $107 found 19 hours ago
Wed, Sep 3 - Thu, Sep 4
PDX
Portland Intl.
SFO
San Francisco Intl.
$114 Roundtrip, just found
$114
Roundtrip
just found
Select United flight, departing Wed, Sep 3 from Portland Intl. to San Francisco Intl., returning Thu, Sep 4, priced at $114 just found
Sat, Aug 30 - Wed, Sep 3
PDX
Portland Intl.
SFO
San Francisco Intl.
$120 Roundtrip, found 6 days ago
$120
Roundtrip
found 6 days ago
Select United flight, departing Sat, Aug 30 from Portland Intl. to San Francisco Intl., returning Wed, Sep 3, priced at $120 found 6 days ago
Wed, Sep 24 - Sun, Sep 28
PDX
Portland Intl.
SFO
San Francisco Intl.
$129 Roundtrip, found 19 hours ago
$129
Roundtrip
found 19 hours ago
Select United flight, departing Wed, Sep 24 from Portland Intl. to San Francisco Intl., returning Sun, Sep 28, priced at $129 found 19 hours ago
Tue, Oct 7 - Tue, Oct 14
PDX
Portland Intl.
SFO
San Francisco Intl.
$129 Roundtrip, found 5 days ago
$129
Roundtrip
found 5 days ago
Select United flight, departing Tue, Oct 7 from Portland Intl. to San Francisco Intl., returning Tue, Oct 14, priced at $129 found 5 days ago
Wed, Oct 8 - Wed, Oct 15
PDX
Portland Intl.
SFO
San Francisco Intl.
$130 Roundtrip, found 2 days ago
$130
Roundtrip
found 2 days ago
Select United flight, departing Wed, Oct 8 from Portland Intl. to San Francisco Intl., returning Wed, Oct 15, priced at $130 found 2 days ago
Wed, Oct 8 - Wed, Oct 15
PDX
Portland Intl.
SFO
San Francisco Intl.
$135 Roundtrip, found 2 days ago
$135
Roundtrip
found 2 days ago
Select United flight, departing Wed, Oct 8 from Portland Intl. to San Francisco Intl., returning Wed, Oct 15, priced at $135 found 2 days ago

Frequently asked questions

What route does flight number UA4781 take?
UA4781 takes a number of routes. The most frequently flown is DIA airport to Midland, TX Airport (MAF-Midland Intl.), which is a direct flight. This flight generally takes 1 hour and 51 minutes. However, you might find other flights with the same number that are multi-stop.
What kind of plane is on flight number UA4781?
UA4781 is a flight number that serves multiple routes. If you're traveling on its most popular one, DEN to Midland Intl. Airport (MAF), there's a good chance you'll be hopping aboard the Bombardier CRJ.
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 UA4781 flight with Travelocity, please visit our Customer Service Portal.