
United Flight UA3684 Deals & Information (2025/2026)
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United Flight 3684 Route Deals From $89
The cheapest prices found with in the last 7 days for return flights were $177 and $89 for one-way flights to Newark Liberty Intl. Airport for the period specified. Prices and availability are subject to change. Additional terms apply.
STL
Lambert-St. Louis Intl.
EWR
Newark Liberty Intl. Airport
$177 Roundtrip, found 4 days ago
$177
Roundtrip
found 4 days ago
STL
Lambert-St. Louis Intl.
EWR
Newark Liberty Intl. Airport
$187 Roundtrip, found 3 days ago
$187
Roundtrip
found 3 days ago
STL
Lambert-St. Louis Intl.
EWR
Newark Liberty Intl. Airport
$190 Roundtrip, found 4 days ago
$190
Roundtrip
found 4 days ago
STL
Lambert-St. Louis Intl.
EWR
Newark Liberty Intl. Airport
$199 Roundtrip, found 4 days ago
$199
Roundtrip
found 4 days ago
STL
Lambert-St. Louis Intl.
EWR
Newark Liberty Intl. Airport
$202 Roundtrip, found 3 days ago
$202
Roundtrip
found 3 days ago
STL
Lambert-St. Louis Intl.
EWR
Newark Liberty Intl. Airport
$203 Roundtrip, found 6 days ago
$203
Roundtrip
found 6 days ago
STL
Lambert-St. Louis Intl.
EWR
Newark Liberty Intl. Airport
$207 Roundtrip, found 3 days ago
$207
Roundtrip
found 3 days ago
STL
Lambert-St. Louis Intl.
EWR
Newark Liberty Intl. Airport
$209 Roundtrip, found 4 days ago
$209
Roundtrip
found 4 days ago
STL
Lambert-St. Louis Intl.
EWR
Newark Liberty Intl. Airport
$212 Roundtrip, found 5 days ago
$212
Roundtrip
found 5 days ago
STL
Lambert-St. Louis Intl.
EWR
Newark Liberty Intl. Airport
$215 Roundtrip, found 3 days ago
$215
Roundtrip
found 3 days ago