Campsite Odds

Booking odds · July

Headwaters Campground at Flagg Ranch in July: How Hard Is It to Book?

Headwaters Campground at Flagg Ranch · WY · Grand Teton National Park

The verdict

Hard

Booking difficulty 7 out of 10. Competitive. Be ready when the booking window opens.

Rarely sells outBased on 3 years of reservation data

July rarely sells out — you can often book close to your trip.

Headwaters Campground at Flagg Ranch in July scores 7 out of 10 for booking difficulty — hard. Competitive. Be ready when the booking window opens.

Across the last 3 years of reservation history, the typical July booking was locked in about 70 days before arrival, with the campground running roughly 120% full that month. The lightest arrival day is Thursday, so shifting to a midweek start is the single easiest way to improve your odds.

Lead time

How far ahead people book

Same day: 6% of bookings6%Same day1–3d: 6% of bookings6%1–3d4–7d: 4% of bookings4–7d1–2wk: 6% of bookings6%1–2wk2–4wk: 10% of bookings10%2–4wk1–2mo: 15% of bookings15%1–2mo2–3mo: 12% of bookings12%2–3mo3–6mo: 29% of bookings29%3–6mo6mo+: 13% of bookings13%6mo+Median booking lead time: 70 days ahead
Demand split

Weekend vs. weekday demand

Weekend (Fri–Sat)Weekday (Sun–Thu)

Best odds: arrivals are lightest on Thursday in July. A midweek arrival is your easiest booking.

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Booking window · July 2027

When July reservations open

Reservations for Headwaters Campground at Flagg Ranch in July 2027 operate on a rolling 6-month window releasing at 7:00 AM ET.

July 1 stays open

January 1, 2027

at 7:00 AM ET

Release style

6-Month Rolling Window

Releases daily 6 months ahead at 7:00 AM ET

Campsites for July 1, 2027 become bookable on January 1, 2027 at 7:00 AM ET. Each subsequent date throughout July releases day-by-day exactly 6 months prior to arrival.

Facility note: Standard Recreation.gov 6-month rolling window: sites become bookable 6 months before arrival at 7:00 AM ET.

Plan B

Easier nearby options in July

If your dates are flexible, these nearby campgrounds are typically easier to book.

Colter Bay Marina End Ties

WYPlan ahead

TRAIL CREEK

WYPlan ahead

Indian Creek Campground (WY)

WYPlan ahead

FAQ

Headwaters Campground at Flagg Ranch in July: common questions

How hard is it to book Headwaters Campground at Flagg Ranch in July?
Headwaters Campground at Flagg Ranch rates 7 out of 10 for July — Hard. Competitive. Be ready when the booking window opens.
How far in advance should I book Headwaters Campground at Flagg Ranch for July?
The typical July reservation was made about 70 days before arrival, so plan to book as early as your dates allow.
When do July reservations open for Headwaters Campground at Flagg Ranch?
Reservations for Headwaters Campground at Flagg Ranch in July 2027 open on a rolling 6-month window. Sites for July 1 become bookable on January 1, 2027 at 7:00 AM ET, with each subsequent day releasing day-by-day 6 months ahead.
What is the best day to arrive at Headwaters Campground at Flagg Ranch in July?
Arrivals are lightest on Thursday. A midweek arrival is usually the easiest booking.

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