United Flight 2121 Deals & Information (2026/2027)

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United Flight 2121 Route Deals From $79

The cheapest prices found with in the last 7 days for return flights were $160 and $79 for one-way flights to San Francisco Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Tue, May 5 - Wed, May 6
EUG
Eugene
SFO
San Francisco Intl.
$160 Roundtrip, found 3 hours ago
$160
Roundtrip
found 3 hours ago
Select United flight, departing Tue, May 5 from Eugene to San Francisco Intl., returning Wed, May 6, priced at $160 found 3 hours ago
Thu, May 7 - Tue, May 12
EUG
Eugene
SFO
San Francisco Intl.
$174 Roundtrip, found 1 day ago
$174
Roundtrip
found 1 day ago
Select United flight, departing Thu, May 7 from Eugene to San Francisco Intl., returning Tue, May 12, priced at $174 found 1 day ago
Wed, Apr 29 - Thu, Apr 30
EUG
Eugene
SFO
San Francisco Intl.
$177 Roundtrip, found 1 day ago
$177
Roundtrip
found 1 day ago
Select United flight, departing Wed, Apr 29 from Eugene to San Francisco Intl., returning Thu, Apr 30, priced at $177 found 1 day ago
Thu, May 7 - Sat, May 9
EUG
Eugene
SFO
San Francisco Intl.
$191 Roundtrip, found 1 day ago
$191
Roundtrip
found 1 day ago
Select United flight, departing Thu, May 7 from Eugene to San Francisco Intl., returning Sat, May 9, priced at $191 found 1 day ago
Mon, May 4 - Mon, May 11
EUG
Eugene
SFO
San Francisco Intl.
$195 Roundtrip, found 2 days ago
$195
Roundtrip
found 2 days ago
Select United flight, departing Mon, May 4 from Eugene to San Francisco Intl., returning Mon, May 11, priced at $195 found 2 days ago
Sat, Jun 13 - Tue, Jun 16
EUG
Eugene
SFO
San Francisco Intl.
$203 Roundtrip, found 20 hours ago
$203
Roundtrip
found 20 hours ago
Select United flight, departing Sat, Jun 13 from Eugene to San Francisco Intl., returning Tue, Jun 16, priced at $203 found 20 hours ago
Sat, Jun 13 - Tue, Jun 16
EUG
Eugene
SFO
San Francisco Intl.
$212 Roundtrip, found 20 hours ago
$212
Roundtrip
found 20 hours ago
Select United flight, departing Sat, Jun 13 from Eugene to San Francisco Intl., returning Tue, Jun 16, priced at $212 found 20 hours ago
Thu, Jun 4 - Mon, Jun 8
EUG
Eugene
SFO
San Francisco Intl.
$215 Roundtrip, found 3 days ago
$215
Roundtrip
found 3 days ago
Select United flight, departing Thu, Jun 4 from Eugene to San Francisco Intl., returning Mon, Jun 8, priced at $215 found 3 days ago
Thu, May 7 - Tue, May 12
EUG
Eugene
SFO
San Francisco Intl.
$219 Roundtrip, found 1 day ago
$219
Roundtrip
found 1 day ago
Select United flight, departing Thu, May 7 from Eugene to San Francisco Intl., returning Tue, May 12, priced at $219 found 1 day ago
Wed, Jun 3 - Sun, Jun 7
EUG
Eugene
SFO
San Francisco Intl.
$227 Roundtrip, found 3 days ago
$227
Roundtrip
found 3 days ago
Select United flight, departing Wed, Jun 3 from Eugene to San Francisco Intl., returning Sun, Jun 7, priced at $227 found 3 days ago
Fri, May 8 - Sat, May 9
EUG
Eugene
SFO
San Francisco Intl.
$230 Roundtrip, found 1 day ago
$230
Roundtrip
found 1 day ago
Select United flight, departing Fri, May 8 from Eugene to San Francisco Intl., returning Sat, May 9, priced at $230 found 1 day ago
Tue, May 5 - Wed, May 6
EUG
Eugene
SFO
San Francisco Intl.
$231 Roundtrip, found 3 hours ago
$231
Roundtrip
found 3 hours ago
Select United flight, departing Tue, May 5 from Eugene to San Francisco Intl., returning Wed, May 6, priced at $231 found 3 hours ago
Thu, May 7 - Sat, May 9
EUG
Eugene
SFO
San Francisco Intl.
$236 Roundtrip, found 1 day ago
$236
Roundtrip
found 1 day ago
Select United flight, departing Thu, May 7 from Eugene to San Francisco Intl., returning Sat, May 9, priced at $236 found 1 day ago