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Per this FlyerTalk thread on mileage runs, there are some low fares from various US cities to Lima on both United and Delta next March and April starting at around $420 roundtrip from San Francisco, Salt Lake City, Denver, Minneapolis, Boston, New York and others via Houston (United) and Atlanta (Delta). What’s interesting but not that unusual for deals like this is that Delta’s low fares are out of United’s hubs like San Francisco and Denver, while United’s low fares are out of Delta hubs like Salt Lake City and Minneapolis, though you’ll also find Delta flights from its hub at LaGuardia.
The deals from most cities start around March 29-31 and go through much of the month of April. Stays must be between 3-8 nights it looks like, so you can either make a long weekend out of it, or plan a longer vacation.
Depending on where you depart, your mileage can vary from about 7,900 to 8,800 roundtrip, and your cost per mile (CPM) is about 4.8-6 cents. The actual miles/points hauled is much higher, especially if you book with a card that gives a bonus on airfare, like 3X on the Premier Rewards Gold, 2X with the Sapphire Preferred or Barclaycard Arrival, or book through a portal as outlined here.
The first thing I do when these come up is check Google’s ITA Matrix and use the calendar search function including a range of nights for length of stay to find out what dates these low fares are available, and I found dozens of days in March and April 2014 as you can see from the calendar above. Here’s a quick cross-section of cities and routes that I found on both United and Delta.
Probably the best of the deals out there, flights from San Francisco to Lima via Atlanta on Delta for just $466 roundtrip.
Salt Lake City
This was the first deal reported on, and is an itinerary on United from Salt Lake City to Lima via Houston, racking up a total of 8656 miles for $440 – a CPM of 4.8 cents.
Denver also featured some really low fares in March and April.
A Delta hub, the low fares out of Minneapolis are actually on United via Houston again and ring up at around $440 for 8,343 miles.
If you’re in the New York area, try taking a Delta flight out of LaGuardia and flying via Atlanta.
Fares are around $482 for a total run of 7,876 miles at a CPM of 6.1 cents – not so low, but the fare is pretty good if you’re flying out of New York.
There are a few flight options out of Boston via Atlanta to Lima on Delta for around $506.
That’s a bit higher – with your roundtrip mileage coming out to about 8,250 for a CPM of around 6.1 cents, so not great, but something to consider.
As you can see, some deals are better than others, though these are all pretty low fares for this itinerary, so if you’re thinking of a mileage for early next year, this could be a good option since it’s available from so many different cities (I just scratched the surface, I bet there are a bunch more out there), and Peru is such a great place to visit.