
Discover tips and strategies to find the most affordable flight options for your journey from Billings (BIL) to San Juan (PR1). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated August 3, 2026.
Round-trip from | $609 (United Airlines) |
|---|
Fly from
Fly to
Route
Depart
Return
BillingsSan Juan
BIL - SJU
BILSJU
Billings Logan Intl
Sat 12/12
5:51 pm-11:50 am
2 stops14h 59m
San Juan Luis Munoz Marin Intl
Thu 12/17
2:21 pm-9:19 pm
1 stop9h 58m
BillingsSan Juan
BIL - SJU
BILSJU
Billings Logan Intl
Thu 9/10
1:13 pm-9:24 am
2 stops18h 11m
San Juan Luis Munoz Marin Intl
Fri 9/18
6:00 am-10:10 pm
2 stops18h 10m
BillingsSan Juan
BIL - SJU
BILSJU
Billings Logan Intl
Wed 9/9
7:00 am-11:50 pm
2 stops14h 50m
San Juan Luis Munoz Marin Intl
Fri 9/18
1:00 am-11:02 am
2 stops12h 02m
BillingsSan Juan
BIL - SJU
BILSJU
Billings Logan Intl
Thu 9/10
4:07 pm-2:44 pm
2 stops20h 37m
San Juan Luis Munoz Marin Intl
Fri 9/18
3:56 pm-11:02 am
1 stop21h 06m
Everything you need to know about your flight from Billings to San Juan
Overall
Food
Boarding
Crew
Entertainment
Comfort
Reviews
Dawn,Aug 2026
ORD - DEN
Overall
Food
Boarding
Crew
Entertainment
Comfort
Reviews
Dawn,Aug 2026
ORD - DEN
Find useful and relevant information for your journey from Billings to San Juan. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$495 | Average$635 | FlexibilityNo cancel fee | On-time69% |