Milwaukee to San Juan flights
Routavio compares airline fares from several flight booking sites. The lowest one-way fare it found for Milwaukee to San Juan is €174 with Frontier Airlines (checked on 5 Nov 2026).
Your next trip, last seen at €174
Lowest observedFrontier Airlines · 2 stops · One wayWhen to fly
Explore datesMore dates worth a look
Last seen for 1 traveller on 6 Nov 2026. Check today's price.
Find the dates that work for you
The lowest fare we observed for each month. Open a month to see its days, then pick your outbound and return. A day with no price is one we will search for you.
One-way fare
- 4 Feb€244
- 7 Feb€232
- 14 Feb€323
- 16 Feb€196
- 21 Feb€261
- 23 Feb€174
- 25 Feb€264
- 28 Feb€278
- Lowest observed
- €174, departing 23 Feb 2027 (Last checked: 5 Nov 2026)One-way fare · Priced departure days checked in the last 14 days: 37Check live prices for this route
- Airlines seen
- Air Canada, Arajet, Frontier Airlines, JetBlue, Porter Airlines Canada, Sun Country Airlines, United Airlines, WestJet (8)
- Typical journey time
- 23h 03m
About this route
Explore the fares we observed from Milwaukee to San Juan. Prices move often, so pick your dates to see the latest options.
- Route distance
- 3,414 km
- Typical journey time
- 23h 03m
- Airlines seen
- Air Canada, Arajet, Frontier Airlines, JetBlue, Porter Airlines Canada, Sun Country Airlines, United Airlines, WestJet (8)
- Seen on fares with a connection
- Frontier Airlines, United Airlines, Sun Country Airlines, JetBlue, WestJet
- Alternative airports
- SIG
Route-level information; individual journeys vary.
We have not observed non-stop service on this route; the fares shown include at least one stop.
A clearer picture of your fare
If the observed fare for this date drops, we will email you. At most one message a day.
Airport to city: straight-line distance
- General Mitchell International Airport (MKE) → Milwaukee, city gazetteer reference point (43.0389, -87.9065): ≈ 10 km.
- Fernando Luis Ribas Dominicci Airport (SIG) → San Juan, city gazetteer reference point (18.4663, -66.1057): ≈ 1 km.
- Luis Munoz Marin International Airport (SJU) → San Juan, city gazetteer reference point (18.4663, -66.1057): ≈ 11 km.
Approximate distances calculated from coordinates, not road distances or travel times. These airports serve the city; they are not confirmed endpoints of an offer.
Lowest fare by departure month
Cheapest month from Milwaukee to San Juan: February 2027, from €174 (checked 5 Nov 2026).
| Month | Lowest fare | Priced days |
|---|---|---|
| November 2026 | €228 | 7 |
| December 2026 | €186 | 10 |
| January 2027 | €198 | 10 |
| February 2027 | €174 | 8 |
Lowest fare by day of the week
Cheapest day of the week from Milwaukee to San Juan: Tuesday, from €174 (checked 5 Nov 2026).
| Day | Lowest fare | Priced days |
|---|---|---|
| Monday | €186 | 4 |
| Tuesday | €174 | 5 |
| Thursday | €198 | 9 |
| Friday | €191 | 4 |
| Sunday | €232 | 12 |
One-way fares checked in the last 14 days. Each figure is the lowest priced departure day we saw, not a guaranteed fare.
Lowest fare by days before departure
Lowest fare from Milwaukee to San Juan by days until departure (61 days or more): €174 (checked 5 Nov 2026).
| Days before departure | Lowest fare | Priced days |
|---|---|---|
| 8 to 30 days | €186 | 7 |
| 31 to 60 days | €201 | 11 |
| 61 days or more | €174 | 17 |
One-way fares checked in the last 14 days. Each figure is the lowest stored fare for that distance to departure, not a price forecast.
Fares for different departure dates, checked now; not a guide to when to book.
Lowest one-way fare we saw per airline
Cheapest airline from Milwaukee to San Juan: Frontier Airlines, from €174 (checked 6 Nov 2026).
| Airline | Lowest fare | Priced days |
|---|---|---|
| Frontier Airlines | €174Feb 23, 2027 | 22 |
| Sun Country Airlines | €217Dec 31, 2026 | 15 |
One-way fares checked in the last 14 days. An airline listed here had a fare on at least 3 departure days. Each figure is the lowest we saw, not a guaranteed fare. Connecting itineraries are included; the date is the departure day of that fare.
Frequently asked
How much is a flight from Milwaukee to San Juan?
The lowest fare Routavio has observed is €174, found on 5 Nov 2026. Prices move, so read it as a floor rather than a quote.
When is the cheapest month to fly from Milwaukee to San Juan?
Cheapest month from Milwaukee to San Juan: February 2027, from €174 (checked 5 Nov 2026).
Are there direct flights from Milwaukee to San Juan?
Our data holds no non-stop flight from Milwaukee to San Juan. The fares on this page include at least one stop.
Which airlines fly from Milwaukee to San Juan?
Routavio has seen these carriers on the route: Air Canada, Arajet, Frontier Airlines, JetBlue, Porter Airlines Canada, Sun Country Airlines, United Airlines, WestJet (8).
How long does the flight from Milwaukee to San Juan take?
Across the 93 fares Routavio observed, the average journey time is 20h 23m, including any stops. Individual departures vary; the fastest observed flight is listed in the route facts above.
How many of the observed Milwaukee to San Juan fares were non-stop?
None of the 93 fares we observed was non-stop; every one included at least one stop. That describes our observations, not every flight that operates.
Which day of the week is cheapest from Milwaukee to San Juan?
Cheapest day of the week from Milwaukee to San Juan: Tuesday, from €174 (checked 5 Nov 2026).
Which airline has the lowest fare from Milwaukee to San Juan?
Cheapest airline from Milwaukee to San Juan: Frontier Airlines, from €174 (checked 6 Nov 2026).
How observed prices work, what "No data" means and what a fare includes: Read the flight price guide · Price and schedule freshness on Routavio
Keep exploring
Similar routes
More routes from Milwaukee
Show all 33 routes →Show fewer ↑
More routes to San Juan
Show all 36 routes →Show fewer ↑
Recently observed fares. Prices may change.