RareNonstop · 5h
CHI to SJUPuerto Rico
San Juan
$162
usually $340
−52%
Most monthly lows $287–$340. Cheaper than every other month on record (3).
Flights · CHI → LIM
Chicago to Lima
Best fare, round trip
$471
Too little price history on this route to compare — the fare is shown as found.
Found
- Depart
- Fri 27 Aug
- Return
- Mon 6 Sep
- Stay
- 10 nights
- Flight
- 1 stop · 9.5h
- Airline
United
Cached fare — the booking search re-prices live before you pay.
PeruLimaThe best restaurant city in South America, on a cliff above the Pacific — and the way to Cusco.Best windowDec–AprAirportsJorge Chávez (LIM)Every route into LimaFare seasonality
When this route gets cheap.
The cheapest itinerary we are tracking makes one stop and takes about 9.5 hours outbound, on a 10-night trip — ticketed under United, which on a connecting fare need not operate every leg. At $471 for 6,093 km each way, that works out to about $39 per 1,000 km flown. That is below the $44 per 1,000 km typical of long-haul fares here. Across the 7 departure cities we track at a similar distance from Lima, this fare ranks 3rd — 36% above the $347 from Washington. It is also the cheapest of the 25 routes of similar length we watch out of Chicago. We have 3 months of cached prices for this route so far — not enough to call a fare cheap or expensive, so we publish the price without a percentage. Fare history here is still too short to name a cheap season. The best time to be in Lima: Dec–Apr.
The 4 days we hold a cached fare for
Press a date to compare its fares
The median cached fare across this calendar is 34% higher than when tracking began on 8 Aug — $614 then versus $820 now, across 20 recorded snapshots. This is a calendar-level trend, so an individual deal above can be lower. The lowest single day we have seen here is $461, on 13 Sep.
These are the only days we have a cached price for on this route so far — not the only days it flies. The search above covers any date.
Cached fares · checked 17 Oct 2026
We are still collecting this route's months — 3 months of cached prices so far, too few to chart.
Route facts
- Airports
- O’Hare (ORD) · Midway (MDW) ↔ Jorge Chávez (LIM)
- Flight time
- ≈9.5 hours outbound
- Distance
- ≈6,093 km each way
- Airlines on the board
- United
- Itineraries
- Connections on current fares
- Best months to visit
- Dec–Apr
Good to know
CHI → LIM, answered.
How far in advance should I book CHI → Lima?
We do not publish a number for this, because we cannot measure it yet. Answering it honestly means watching the same departure date on this route over many weeks as it approaches, and that archive is still filling up — so any "book N days ahead" figure here would be borrowed from somewhere else rather than measured. Our guide Why flight prices change covers the levers we can measure.
Are there nonstop flights from Chicago to Lima?
The current cheapest fares involve a connection, ticketed under United. We hold no nonstop fare on this route right now, which does not mean none flies — search your exact dates to see what does.
Are these prices guaranteed?
No — these are cached fares found on real searches (this one on 17 October). Airlines reprice constantly, so the booking search re-checks the live price before you pay. Fresher finds are far more likely to still be available.
Next step
Sleeping in Lima?
Lock the flight first — then compare stays for 27 Aug '27 – 6 Sep '27 · 10 nights.
Browse hotelsMissed it?
Cached fares expire. This route has a feed of its own — follow it and the next CHI → LIM drop reaches you as soon as we find it.
Follow this route’s feedKeep browsing
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$430
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$762
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