Cheap Flights from Washington, D.C. to St Denis
No deal from Washington, D.C. to St Denis has cleared our price bar yet. What we have seen on the route is below.
Across 3 months of observations from Washington, D.C. to St Denis, the lowest round-trip fare we recorded was $1734, in September. The typical fare was $1867. September was the cheapest month we saw and August the dearest.
The most recent price we saw on this route was $1827 on SWISS, Air Mauritius, Austrian, Air Austral, and Edelweiss Air, seen Oct 28. It is an unverified observation and may have changed.
See every deal <a href="/from/washington-dc">from Washington, D.C.</a>, <a href="/to/st-denis">to St Denis</a>, or the return direction <a href="/from/st-denis/to/washington-dc">St Denis to Washington, D.C.</a>.
Latest price we saw: Washington, D.C. to St Denis
The most recent round-trip fare our sweep found on this route. It is not verified and may have changed since the date shown.
| From | Price | Per mile | Travel dates | Airline | Seen | Check price |
|---|---|---|---|---|---|---|
| Washington, D.C. (IAD) to St Denis (RUN) | $1827 | 9.7¢ | Nov 16 – Nov 22 | SWISS, Air Mauritius, Austrian, Air Austral, and Edelweiss Air | Oct 28 | Check price |
Price history: Washington, D.C. to St Denis
What we observed by month, from our signals database. Unverified observations, not bookable prices.
| Month | Low | Typical | Sightings |
|---|---|---|---|
| Oct 2026 | $1786 | $1800 | 34 |
| Sep 2026 | $1734 | $1878 | 34 |
| Aug 2026 | $1919 | $1924 | 63 |
Frequently asked questions
How many flight deals from Washington, D.C. to St Denis are on Sparkflights right now?
There are 0 verified deals from Washington, D.C. to St Denis on the board right now. The list refreshes hourly.
What is the lowest price ever seen from Washington, D.C. to St Denis?
The lowest fare we've recorded from Washington, D.C. to St Denis is $1734, based on 131 price observations over 3 months.
How much does a flight from Washington, D.C. to St Denis cost?
The typical round-trip fare we observed from Washington, D.C. to St Denis is $1867, against a recorded low of $1734. These are observations, not quotes.
When is the cheapest month to fly Washington, D.C. to St Denis?
September was the cheapest month we observed from Washington, D.C. to St Denis and August the dearest, over 3 months of data.
What is the current price from Washington, D.C. to St Denis?
The most recent fare our sweep saw from Washington, D.C. to St Denis is $1827, on Oct 28. It is an unverified observation rather than a verified deal, so check it before booking.